Best 10 Mushroom And Onion Gratins Recipes

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Indulge in the symphony of flavors presented by our delectable mushroom and onion gratins, a culinary masterpiece that tantalizes the taste buds with its rich, earthy notes and a symphony of textures. This delectable dish features a medley of tender mushrooms and sweet onions, enveloped in a luscious and creamy sauce, all baked to perfection beneath a golden-brown crust. Prepared using fresh, wholesome ingredients, these gratins are a testament to the art of simple yet sophisticated cooking.

Our collection of recipes offers a diverse range of gratin variations tailored to suit every palate. From the classic French gratin, featuring a velvety béchamel sauce, to the hearty and robust Italian-inspired gratin, bursting with the flavors of sun-dried tomatoes and Parmesan cheese, these recipes promise an unforgettable dining experience. Vegetarian and vegan enthusiasts will delight in the delectable meatless gratin, showcasing the natural goodness of vegetables.

Whether you seek a comforting meal to warm the soul on a chilly evening or an elegant dish to impress your dinner guests, our mushroom and onion gratin recipes will undoubtedly deliver. With step-by-step instructions and helpful tips, these recipes are accessible to home cooks of all skill levels. So, gather your ingredients, preheat your oven, and embark on a culinary journey that will leave you craving more.

Check out the recipes below so you can choose the best recipe for yourself!

MUSHROOM GRATIN



Mushroom Gratin image

This unspeakably delicious, meatless Russian dish is called Mushroom Julienne in Russian cookbooks. Serve it as an appetizer, a meatless entree or a light, late supper.

Provided by fluffernutter

Categories     Vegetable

Time 1h5m

Yield 4 serving(s)

Number Of Ingredients 11

4 tablespoons butter
2 small onions, finely chopped
2 lbs white button mushrooms, chopped
1 1/2 tablespoons dry vermouth
2/3 cup sour cream
3/4 cup white sauce
1/3 cup snipped fresh chives
1 pinch freshly grated nutmeg
1/2 teaspoon fennel seed
salt & freshly ground black pepper
3/4 cup grated gruyere cheese

Steps:

  • Melt the butter in a skillet and saute the onions until they begin to color, about 8 minutes. Add the mushrooms and saute until they release their liquid, then until it is evaporated and mushrooms are nicely browned, about 18 minutes. Stir in the vermouth and cook for 3 minutes.
  • Preheat the oven to 425 degrees.
  • Stir the sour cream, 1/2 cup of the white sauce, the chives, nutmeg, fennel seeds and salt and pepper. Mix well. Cook for 3 minutes.
  • Divide the mixture among 4 ovenproof ramekins or custard cups. Spread a tablespoon of the remaining white sauce over each portion and sprinkle generously with Gruyere. Bake for 15 minutes or until bubbly and browned.

Nutrition Facts : Calories 403.3, Fat 32, SaturatedFat 17.6, Cholesterol 73, Sodium 348.8, Carbohydrate 17.3, Fiber 3.1, Sugar 7.5, Protein 16.7

MUSHROOM AND GREENS GRATIN



Mushroom and Greens Gratin image

Casseroles need not contain eggs or dairy products. And baked beans, exceptionally creamy after their long simmer in the oven, can be made into perfect vegan fare. Add vegetables of your choice and you'll have a perfect one-dish meal. This savory gratin is a regular item in my winter repertory. Those one-pound bags of sturdy greens, sold in my market as "Southern greens mix," are a winter godsend. All the time-consuming work has been done, and the rest can be accomplished while the blanching water comes to a boil.

Provided by Martha Rose Shulman

Categories     dinner, weekday, main course

Time 1h10m

Yield Serves four to six

Number Of Ingredients 12

1 1/2 pounds greens, such as chard, stemmed and washed (2 bunches); or a 1-pound bag Southern greens mix, stemmed and washed
2 tablespoons extra virgin olive oil
1 or 2 shallots or 1 small onion, finely chopped
1/2 pound mushrooms, sliced
Salt
freshly ground pepper
1 teaspoon finely chopped fresh rosemary
2 large garlic cloves, minced
2 ounces Gruyère cheese, grated 1/2 cup
1 ounce Parmesan, grated 1/4 cup
3 eggs
1/2 cup milk

Steps:

  • Preheat the oven to 375 degrees. Oil a 2-quart baking dish or gratin.
  • Bring a large pot of water to a boil, salt abundantly and add the greens. Cook for one to four minutes, depending on the type of green (sturdy greens take longer), until just tender. Transfer to a bowl of ice water, then drain and squeeze out water. Chop coarsely.
  • Heat the olive oil over medium heat in a large nonstick skillet, and add the shallots or onion. Cook, stirring, until tender, three to five minutes. Add the mushrooms, and cook, stirring often, until tender, about eight minutes. Add salt and pepper to taste, and the rosemary and garlic. Cook for another minute. Add the greens, and stir together for another minute. Adjust seasonings.
  • Whisk together the eggs and milk. Add salt and pepper, and stir in the cheeses and mushroom/greens mixture. Scrape into the baking dish. Bake 35 to 40 minutes until browned and sizzling. Serve hot, warm or room temperature.

Nutrition Facts : @context http, Calories 185, UnsaturatedFat 7 grams, Carbohydrate 10 grams, Fat 12 grams, Fiber 3 grams, Protein 12 grams, SaturatedFat 4 grams, Sodium 532 milligrams, Sugar 4 grams, TransFat 0 grams

MUSHROOMS AU GRATIN



Mushrooms Au Gratin image

This easy-to-prepare side dish brings me rave reviews whenever I prepare it for the holidays. Even when I double the recipe, my family eats every bite.

Provided by Taste of Home

Categories     Side Dishes

Time 20m

Yield 8 servings.

Number Of Ingredients 9

2 pounds sliced fresh mushrooms
1/4 cup butter, cubed
1/2 cup white wine or chicken broth
2 tablespoons all-purpose flour
2/3 cup sour cream
1 teaspoon pepper
1/4 teaspoon ground nutmeg
1 cup shredded Gruyere or Swiss cheese
2 tablespoons minced fresh parsley

Steps:

  • In a large skillet, saute mushrooms in butter until tender. Add wine or broth. Bring to a boil. Reduce heat; simmer, uncovered, for 4 minutes. , Combine the flour, sour cream, pepper and nutmeg until smooth; stir into mushrooms. Cook and stir for 1-2 minutes or until bubbly. Transfer to a shallow serving dish. Sprinkle with cheese and parsley.

Nutrition Facts : Calories 193 calories, Fat 14g fat (8g saturated fat), Cholesterol 44mg cholesterol, Sodium 119mg sodium, Carbohydrate 7g carbohydrate (2g sugars, Fiber 2g fiber), Protein 8g protein.

FANTASTIC MUSHROOMS AU GRATIN



Fantastic Mushrooms Au Gratin image

This is one of my family's all time favorite mushroom recipes, you can double the recipe, I have left the garlic as optional if you are a garlic lover I suggest to add in and you may adjust the amount to taste --- you will love this! :)

Provided by Kittencalrecipezazz

Categories     Vegetable

Time 20m

Yield 4 serving(s)

Number Of Ingredients 8

1/4 cup butter (4 tablespoons)
2 lbs fresh mushrooms, sliced
3 garlic cloves, minced (optional or adjust to taste, I most always add in)
2/3 cup sour cream
salt and pepper (I use seasoned salt)
2 tablespoons all-purpose flour
1/4 cup chopped fresh parsley
1 cup shredded mozzarella cheese (or to taste, Swiss also works well)

Steps:

  • Preheat oven to 400 degrees F.
  • Grease a shallow baking dish.
  • In a medium skillet saute the sliced mushrooms with butter over medium-high heat (if using garlic add in with the mushrooms).
  • In a small bowl, blend together sour cream, salt, pepper and flour.
  • Add to the mushrooms in the pan.
  • Heat until JUST beginning to boil.
  • Transfer to a baking dish.
  • Sprinkle with chopped parsley and cheese.
  • Bake for about 10-15 minutes.

TOURNEDOS OF BEEF IN MUSHROOM, MUSTARD AND RED WINE SAUCE WITH CARAMELIZED ONION-POTATO GRATIN



Tournedos of Beef in Mushroom, Mustard and Red Wine Sauce with Caramelized Onion-Potato Gratin image

Provided by Bobby Flay | Bio & Top Recipes

Categories     side-dish

Time 1h35m

Yield 4 servings

Number Of Ingredients 22

4 slices, country-style bread
Olive oil
Salt and pepper
2 tablespoons olive oil
1 tablespoon unsalted butter
4 beef fillet steaks, about 6 ounces
Salt and coarsely ground black pepper
1 pound shiitake mushrooms, cleaned and quartered
2 shallots, finely diced
1 cup red wine
1 cup beef broth
2 tablespoons Dijon mustard
2 tablespoons cold unsalted butter
2 tablespoons olive oil
3 large Spanish onion, peeled and sliced thinly
2 cloves garlic, finely chopped
Salt and freshly ground black pepper
4 large potatoes, peeled and sliced thinly
3 tablespoons balsamic vinegar
1 1/4 cups heavy cream
1/4 cup finely chopped fresh parsley
1 cup grated Gruyere cheese

Steps:

  • Preheat oven to 400 degrees F. Place bread on a work surface and using a 3-inch cookie cutter, cut a round crouton from the center of each piece of bread. Brush both sides of the croutons with olive oil and season with salt and pepper, to taste. Place the croutons on a baking sheet and bake for 5 to 7 minutes or until lightly golden brown.
  • Heat olive oil and butter in a large skillet over high heat. Season the fillets with salt and press the coarsely cracked black pepper onto 1 side of each fillet. Place the fillets pepper-side down into the skillet and sear until golden brown, turn the fillets over and continue cooking for 4 to 5 minutes for medium-rare doneness. Remove the steaks to a plate. Remove all but 3 tablespoons of the fat in the pan and return to high heat. Add the mushrooms and cook until golden brown and their liquid has evaporated. Add the shallots and cook until soft. Add the red wine and reduce by half. Add the broth and cook until reduced by half. Whisk in the mustard and butter and cook for 30 seconds. Season with salt and pepper, to taste. Place each fillet on top of a crouton and spoon some of the sauce over.
  • Heat oil in a large saute pan over medium heat. Add the onions and cook slowly until caramelized. Add the garlic and balsamic vinegar and cook for 2 minutes. Preheat oven to 375 degrees F. Butter a 9-inch baking pan a place a layer of potatoes on the bottom and season with salt and pepper. Spoon 1/5 of the onion mixture over the potatoes and top with 1/4 cup of the heavy cream and a tablespoon of parsley. Repeat to make 5 layers. Sprinkle the cheese over the top of the potatoes. Bake for 50 to 60 minutes, or until the potatoes are soft and the cream has been absorbed.

MUSHROOM AND ONION GRATINS



Mushroom and Onion Gratins image

Categories     Mushroom     Onion     Appetizer     Bake     Thanksgiving     Vegetarian     Casserole/Gratin     Chill     Swiss Cheese     Gourmet     Pescatarian     Peanut Free     Tree Nut Free     Soy Free     Kosher

Yield Serves 6 as a first course

Number Of Ingredients 7

1 pound mushrooms, sliced thin
1/2 stick (1/4 cup) unsalted butter
1/4 cup all-purpose flour
2 large onions (about 1 3/4 pounds), sliced very thin
6 tablespoons heavy cream
1 cup grated Gruyère
1/4 cup fresh fine bread crumbs

Steps:

  • In a skillet cook the mushrooms in 2 1/2 tablespoons of the butter over moderately low heat, stirring, until they are softened and most of the liquid they give off has evaporated. Stir in the flour and cook the mixture, stirring, for 3 minutes.
  • In each of six 1 1/2-cup gratin dishes layer the onions, the remaining butter, cut into bits, the mushroom mixture, and salt and pepper to taste, beginning and ending with a layer of onions, and pour 1 tablespoon of the cream over the top of each gratin. In a small bowl combine well the Gruyère and the bread crumbs and sprinkle the mixture over the cream. (Alternatively, the gratin, layered in the same manner, may be prepared in one 2-quart gratin dish.) Bake the gratins in the middle of a preheated 325°F. oven for 50 minutes to 1 hour, or until the onions are tender and the tops are golden. The gratins may be prepared 3 hours in advance, kept covered and chilled, and reheated in a preheated 400°F. oven for 5 minutes, or until they are heated through.

ONIONS AU GRATIN



Onions Au Gratin image

Most everyone cooks with onions, but few think of serving them as a vegetable side dish. My family really loves this recipe.-Christine Halandras, Meeker, Colorado

Provided by Taste of Home

Categories     Side Dishes

Time 40m

Yield 8 servings.

Number Of Ingredients 9

6 medium yellow onions
1/4 cup butter, cubed
2 tablespoons all-purpose flour
1/2 cup beef broth
1/2 cup heavy whipping cream
1/4 teaspoon salt
1/8 teaspoon pepper
1/2 cup shredded Swiss cheese
1/2 cup grated Parmesan cheese

Steps:

  • Cut onions into 1/2-in. slices; saute in butter until tender. Place in a greased 8-in. square baking dish. , In a small bowl, stir the flour, broth, cream, salt and pepper until smooth; pour over onions. Sprinkle with cheeses. , Bake, uncovered, at 350° for 25-30 minutes or until cheese is golden brown and mixture is bubbly.

Nutrition Facts : Calories 203 calories, Fat 15g fat (9g saturated fat), Cholesterol 46mg cholesterol, Sodium 303mg sodium, Carbohydrate 13g carbohydrate (8g sugars, Fiber 2g fiber), Protein 6g protein.

BLUE CHEESE MUSHROOM AND ONION POTATO GRATIN



Blue Cheese Mushroom and Onion Potato Gratin image

To save time saute the onions and mushrooms up to a day in advance, you can also make this omitting the mushrooms if desired. The cooking time is only estimated depending on the thickness of the sliced potatoes, if you own a mandoline use it for this recipe as the potato slices must be sliced very thinly.

Provided by Kittencalrecipezazz

Categories     Potato

Time 1h25m

Yield 6 serving(s)

Number Of Ingredients 9

2 tablespoons oil
2 tablespoons butter
3 onions, halved then sliced
1 lb white button mushrooms, sliced (can use more mushrooms)
3 lbs russet potatoes (peeled and sliced very thin, about 1/8-inch thick)
3 cups whipping cream
3/4 cup blue cheese, crumbled (can use less blue cheese)
1 1/2 cups mozzarella cheese, grated
salt and pepper

Steps:

  • Heat oil and butter in a skillet; saute the onions until caramalized (about 10-12 minutes) remove with a slotted spoon to a bowl.
  • Add in the sliced mushrooms and saute until they loose there moisture (about 10 minutes) transfer to a bowl.
  • Set oven to 375 degrees (oven rack to second-lowest position).
  • Butter a 3-4 quart casserole dish.
  • In a 2-quart saucepan combine the potatoes with the whipping cream (the potatoes on top do not have to be covered completely) bring to a boil; remove from heat and cool to warm (about 30 minutes) leaving the potatoes in the cream.
  • Transfer one-third of the potatoes using a slotted spoon to the baking dish, spreading them out in an even layer.
  • Sprinkle with HALF of the onions, then HALF of the mushrooms; season with salt and pepper.
  • The sprinkle ONE-THIRD of both cheeses over the mushrooms.
  • Make another layer of potatoes then the sprinkle the REMAINING onions and mushrooms over the potatoes then another third of both cheeses.
  • Make one more layer with the remaining potatoes.
  • Top with remaining cheeses.
  • Pour any leftover whipping cream evenly over the top and cover tightly with foil.
  • Make for 45 minutes.
  • Increase the oven temperature to 400 degrees.
  • Remove the foil and bake until the top is golden brown, and the potatoes are fork-tender (about 12-15 minutes).
  • Let stand for 15 minutes before serving (the mixture will thicken upon standing).

WILD MUSHROOM AND POTATO GRATIN



Wild Mushroom and Potato Gratin image

Wild mushrooms add a luxurious dimension to this comforting, almost classic potato gratin. There is no cream here, just milk mixed with porcini broth (the result of soaking dried porcinis for 30 minutes in boiling water). You can use a mix of wild mushrooms, or just one type. Sauté them with onion or shallots, garlic and savory herbs (thyme and rosemary or sage), season them well and toss with the potatoes. The gratin requires 1 1/2 hours in the oven; first you will doubt that all of the liquid will be absorbed by the potatoes, and about halfway through you will be convinced that the finished dish will be watery and the potatoes hard. But by the end, once all the bubbling has subsided, the soft potatoes will have imbibed all of the flavorful liquid in the dish, and the top and edges of the gratin will be crusty, the way a gratin should be.

Provided by Martha Rose Shulman

Categories     dinner, side dish

Time 2h

Yield Serves 6 to 8

Number Of Ingredients 15

1/2 ounce (about 1/2 cup) dried porchinis
2 tablespoons extra virgin olive oil
1 pound wild mushrooms, torn into smaller pieces if large, cleaned if necessary
1/2 cup finely chopped onion or 2 shallots, minced
2 garlic cloves, minced, plus 1/2 garlic clove, intact
1 teaspoon minced fresh thyme leaves, chopped
1 teaspoon minced fresh rosemary or sage
Salt
1/4 cup dry white wine
Freshly ground pepper
1 1/2 pounds russet potatoes, golden potatoes or Yukon golds, scrubbed, peeled if desired, and sliced about 1/4 inch thick
1 cup, tightly packed, grated Gruyère cheese (4 ounces )
Salt to taste
Freshly ground pepper
2-1/2 cups milk (whole or 2 percent)

Steps:

  • Place the dried porcinis in a bowl or a pyrex measuring cup and pour on 1 1/2 cups boiling water. Soak for 30 minutes. Line a strainer with cheesecloth and place over a bowl. Drain mushrooms, then squeeze in cheesecloth to extract juices. Rinse several times and chop medium-fine. Measure out 1 cup of broth.
  • Meanwhile heat oven to 375 degrees. Rub inside of a 3-quart gratin dish or baking dish all over with the cut half garlic clove and lightly oil with olive oil. Heat oil in a wide, heavy nonstick skillet over medium heat. Add onion or shallots and cook gently until just tender, 3 to 5 minutes. Turn up heat to high and add mushrooms. Cook, stirring, until they begin to sweat, 2-3 minutes, reduce heat to medium, and add minced garlic, thyme, rosemary or sage and dried porcinis. Cook, stirring, until fragrant, about 30 seconds. Season mushrooms with salt and pepper and continue to cook over medium heat until soft, about 5 more minutes. Add wine and cook, stirring, until it is no longer visible in the pan. Taste and adjust seasoning.
  • In a large bowl combine potatoes, mushrooms, half the cheese, and salt and pepper. Arrange in an even layer in gratin dish.
  • Combine milk and mushroom broth. Season generously with salt and pour over the potatoes and mushrooms. Press the vegetables down into the liquid. Bake 1 hour. Every 20 minutes remove gratin dish and press potatoes and mushrooms down into the liquid with the back of a large spoon. After 1 hour, sprinkle on remaining cheese and bake for another 30 minutes, until top is golden and the sides crusty. Remove from the oven and allow to sit for 10 to 15 minutes before serving. Serve hot or warm.

Nutrition Facts : @context http, Calories 242, UnsaturatedFat 5 grams, Carbohydrate 26 grams, Fat 11 grams, Fiber 4 grams, Protein 10 grams, SaturatedFat 5 grams, Sodium 594 milligrams, Sugar 6 grams

LEEK AND MUSHROOM GRATIN



Leek and Mushroom Gratin image

Categories     Cheese     Garlic     Mushroom     Side     Quick & Easy     Parmesan     Leek     Fall     Family Reunion     Potluck     Butter     Breadcrumbs     Gourmet     Peanut Free     Tree Nut Free     Soy Free

Yield Makes 6 servings

Number Of Ingredients 13

3/4 stick unsalted butter, divided
1 cup fine dry bread crumbs
1/4 pound Gruyère, finely grated on small teardrop-shaped holes of a box grater (2 cups)
1/2 cup finely grated Parmigiano-Reggiano
2 teaspoons finely chopped garlic
1 tablespoon finely chopped flat-leaf parsley
3 pounds leeks, root ends trimmed
2 tablespoons all-purpose flour
1 1/2 cups chicken stock or reduced-sodium chicken broth
1/8 teaspoon grated nutmeg
1/2 teaspoon grated lemon zest
1 pound cremini mushrooms, trimmed and thinly sliced
Equipment: a 1 1/2-quart oval gratin or other shallow baking dish

Steps:

  • Melt 2 tablespoons butter in a small saucepan over low heat, then cool.
  • Toss melted butter with bread crumbs, cheeses, garlic, parsley, 1/4 teaspoon salt, and 1/8 teaspoon pepper in a bowl until combined.
  • Trim each leek to an 8-inch length (reserve tops for another use if desired). Halve leeks lengthwise, then cut crosswise into roughly 1-inch pieces. Wash leeks, then drain well.
  • Melt 1 tablespoon butter in a 1-to 1 1/2-quart heavy saucepan over medium heat. Add flour and cook roux, whisking, 1 minute. Add stock in a slow stream, whisking, then bring to a boil, whisking. Add nutmeg and zest and boil, whisking, 1 minute. Remove from heat.
  • Preheat oven to 400°F. Butter baking dish.
  • Melt 1 tablespoon butter in a 12-inch heavy skillet over medium-low heat. Add leeks and 1/4 teaspoon each of salt and pepper, then cover leeks directly with a round of parchment paper and cook, stirring occasionally, until liquid is absorbed and leeks are tender and just beginning to brown, 10 to 15 minutes.
  • Meanwhile, heat remaining 2 tablespoons butter in a large heavy skillet over medium heat until foam subsides. Add mushrooms and 1/4 teaspoon each of salt and pepper and cook, stirring occasionally, until liquid is absorbed and mushrooms are just beginning to brown, about 15 minutes. Remove from heat.
  • Remove parchment from leeks and stir in mushrooms. Transfer mixture to baking dish, spreading it evenly. Pour sauce over vegetables and top with crumb mixture. Bake until gratin is bubbling and topping is golden, about 15 minutes.

Tips:

  • Use a variety of mushrooms. This will give your gratin a more complex flavor and texture. Some good options include cremini, shiitake, and oyster mushrooms.
  • Sauté the mushrooms and onions before baking. This will help to caramelize the onions and bring out the flavor of the mushrooms.
  • Use a good quality cheese. The cheese is one of the main ingredients in this dish, so it's important to use a cheese that you enjoy. A sharp cheddar or Gruyère cheese are both good options.
  • Don't overcook the gratin. The gratin should be cooked until the cheese is melted and bubbly and the top is golden brown. Overcooking will make the gratin dry and tough.
  • Serve the gratin immediately. The gratin is best served hot out of the oven. If you let it sit for too long, the cheese will start to harden and the gratin will become less creamy.

Conclusion:

Mushroom and onion gratin is a delicious and easy-to-make dish that is perfect for a weeknight dinner or a special occasion. With its creamy cheese sauce, tender mushrooms, and caramelized onions, this gratin is sure to be a hit with everyone who tries it. So next time you're looking for a comforting and flavorful dish, give mushroom and onion gratin a try. You won't be disappointed!

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