Best 3 Zucchini Onion Casserole Recipes

Welcome to the delectable world of zucchini onion casserole, a culinary delight that combines the flavors of fresh zucchini, aromatic onions, and a medley of savory ingredients. Whether you're a seasoned chef or a novice cook, this versatile dish is sure to tantalize your taste buds and become a family favorite. Our collection of recipes offers a variety of options, from classic comfort food to unique culinary creations, ensuring that there's something for every palate and occasion. From the classic Zucchini Onion Casserole, featuring a creamy sauce and a golden brown crust, to the tantalizing Zucchini Onion Casserole with Sausage, bursting with savory flavors, our recipes cater to diverse preferences. Discover the cheesy goodness of the Zucchini Onion Casserole with Cheese, or indulge in the hearty goodness of the Zucchini Onion Casserole with Ground Beef. And for a vegetarian delight, the Zucchini Onion Casserole with Feta Cheese and Spinach offers a vibrant combination of flavors and textures. Each recipe is carefully crafted to provide step-by-step instructions, ensuring that even beginners can create this delicious dish with confidence.

Here are our top 3 tried and tested recipes!

ZUCCHINI, TOMATO, AND ONION CASSEROLE

Zucchini, Tomato, and Onion Casserole image

This yummy side dish is a wonderful way to use those homegrown vegetables in the summer. This is great for a cookout served along side grilled steak, chicken, hamburgers, etc..

Provided by Andrea F

Categories Side Dish Vegetables Tomatoes

Time 50m

Yield 8

Number Of Ingredients 9

Ingredients

1 zucchini, thinly sliced
1 large tomato, thinly sliced
1 onion, thinly sliced
½ cup unsalted butter
¼ cup red wine vinegar
1 teaspoon garlic salt
1 teaspoon dried basil
½ teaspoon dry mustard
2 cups grated Parmesan cheese

Steps:

Preheat an oven to 350 degrees F (175 degrees C). Grease a 2-quart baking dish.
Arrange the zucchini slices, tomato slices, and onion slices in alternating layers in the prepared baking dish. Melt the butter in a saucepan over medium-low heat; stir the vinegar, garlic salt, basil, and mustard into the melted butter. Pour the butter mixture over the vegetables; sprinkle the Parmesan cheese over the dish.
Bake in the preheated oven until thoroughly heated, about 30 minutes.

Nutrition Facts : Calories 205.3 calories, Carbohydrate 4.5 g, Cholesterol 48.1 mg, Fat 17.4 g, Fiber 0.8 g, Protein 8.6 g, SaturatedFat 10.8 g, Sodium 538.1 mg, Sugar 1.8 g

ZUCCHINI, SQUASH, ONION & CHEESE CASSEROLE RECIPE - (4.1/5)

Zucchini, Squash, Onion & Cheese Casserole Recipe - (4.1/5) image

Provided by á-17891

Number Of Ingredients 12

Ingredients

2 to 3 tablespoons olive oil (plus tiny bit more for drizzling at the end)
1 medium onion, sliced thin
3 cloves garlic, finely diced
1 medium zucchini, ends cut off and thinly sliced into circles
1 medium summer squash, ends cut off and thinly sliced into circles
Pinch freshly grated nutmeg
2 cups white cheddar cheese, shredded
1/2 cup Rosemary Asiago Cheese (or other cheese of choice)
1/3 to 1/4 cup panko crumbs
Grated Parmesan for dusting on top
Salt and pepper to taste
Fresh chopped Italian Parsley for garnish (optional)

Steps:

Heat olive oil in a large pan over medium heat, add garlic and onion and saute up, stirring occasionally (careful not to burn the garlic) until softened about 6 to 8 minutes. Add zucchini and squash to the same pan and continue cooking, stirring occasionally until softened, about 12 minutes. Add fresh grated nutmeg, pinch of salt and pepper and stir in well. Remove from heat and place contents of the pan into a large bowl to let cool slightly. Preheat oven to 375°F. Stir in your 2 1/2 cups cheese and 1/3 cup panko until well combined. Add contents of bowl to a glass casserole dish (8x8) At this point taste test for salt and pepper - add some only if needed. sprinkle the top with the remaining panko and Parmesan cheese. Drizzle with just a touch of olive oil. Place in the oven and bake about 10 minutes or until is gets bubbly around the edges. Turn on broiler and broil (keeping a close eye) an additional 3 to 4 minutes until slightly browned on top. Remove from the oven and let sit about 10 minutes before serving. Garnish with fresh chopped Italian parsley and enjoy

ZUCCHINI-ONION CASSEROLE

Zucchini-Onion Casserole image

I came up with this dish by downsizing my recipe for a crowd. I experimented with amounts, adding and deleting until I got it just right. This is a great side dish that goes well with any meat.

Provided by Taste of Home

Categories Side Dishes

Time 40m

Yield 2 servings.

Number Of Ingredients 10

Ingredients

1-1/3 cups sliced zucchini
3/4 cup water
1 medium onion, chopped
1 tablespoon chopped green pepper
1 egg
1/2 cup mayonnaise
1/3 cup grated Parmesan cheese
1/4 teaspoon salt
1/8 teaspoon pepper
1/3 cup crushed butter-flavored crackers (about 8 crackers)

Steps:

In a large saucepan, combine the zucchini, water, onion and green pepper; bring to a boil. Reduce heat. Cover and simmer for 5 minutes or until vegetables are crisp-tender; drain., In a large bowl, beat the egg. Add mayonnaise, Parmesan cheese, salt and pepper; mix well. Stir into vegetable mixture. , Transfer to a greased 1-qt. baking dish; sprinkle with cracker crumbs. Bake, uncovered, at 350° for 25-30 minutes or until golden brown.

Nutrition Facts : Calories 619 calories, Fat 54g fat (10g saturated fat), Cholesterol 137mg cholesterol, Sodium 1004mg sodium, Carbohydrate 21g carbohydrate (8g sugars, Fiber 3g fiber), Protein 12g protein.

Tips:

Choose fresh and firm zucchini. Avoid zucchini that is bruised or has soft spots.
Grate the zucchini with a box grater. This will help to release its moisture and make it easier to cook.
Use a large skillet or Dutch oven. This will give the zucchini plenty of room to cook without overcrowding.
Cook the zucchini over medium heat. This will help to prevent it from sticking to the pan and burning.
Stir the zucchini frequently. This will help to ensure that it cooks evenly.
Add the onion and garlic towards the end of the cooking time. This will help to prevent them from burning.
Season the zucchini with salt and pepper to taste.
Serve the zucchini hot, topped with Parmesan cheese and parsley.

Conclusion:

Zucchini onion casserole is a delicious and easy-to-make side dish that is perfect for any occasion. It is a great way to use up fresh zucchini and onions, and it is a dish that the whole family will enjoy. The casserole can be served hot, cold, or at room temperature, and it is also a great make-ahead dish. So next time you are looking for a quick and easy side dish, give zucchini onion casserole a try!