Best 10 Celery Root Fennel Gratin With Gruyere Recipes

ROOT VEGETABLE GRATIN

Steps:

• Preheat the oven to 350 degrees F. Butter a 13-by-10-by-2 1/2-inch baking dish.
• Heat 2 tablespoons of olive oil in a large (12-inch) saute pan over medium heat, add the onion and fennel and cook for 10 minutes, tossing occasionally, until lightly browned and tender. Add the garlic and cook for one minute.
• Meanwhile, in a large bowl, combine the onion mixture, sweet potatoes, celery root, Yukon Gold potatoes, cream, chicken stock, Gruyere, thyme, 1 tablespoon salt and 1 1/2 teaspoons pepper. Pour the mixture into the prepared baking dish and press lightly so the vegetables lie flat all the way to the edge. Combine the bread crumbs and 2 tablespoons of olive oil and distribute evenly on top. Bake uncovered for 1 1/2 hours, until the vegetables are very tender when tested with a small knife and the top is browned and bubbly. Allow to set for 15 minutes and serve hot.
• Make ahead: Bake in advance and reheat while the turkey rests, or assemble the dish, cover and refrigerate for up to 24 hours, then bake before serving.

ROOT VEGETABLE GRATIN

Steps:

• Preheat the oven to 350 degrees. Butter a 13-by-10-by-2 1/2-inch oval baking dish.
• Heat 2 tablespoons of olive oil in a large (12-inch) saute pan over medium heat, add the onion and fennel, and cook for 10 minutes, tossing occasionally, until lightly browned and tender. Add the garlic and cook for one minute.
• Meanwhile, in a large bowl, combine the onion mixture, sweet potatoes, celery root, Yukon Gold potatoes, cream, chicken stock, Gruyere, thyme, 1 tablespoon salt, and 1 1/2 teaspoons pepper. Pour the mixture into the prepared baking dish and press lightly so the vegetables lie flat all the way to the edge. Combine the bread crumbs and 2 tablespoons of olive oil and distribute evenly on top. Bake uncovered for 1 1/2 hours, until the vegetables are very tender when tested with a small knife and the top is browned and bubbly. Allow to set for 15 minutes and serve hot.

GRATIN OF CELERY ROOT AND POTATO

Steps:

• Preheat the oven to 375 degrees F.
• Slice the potatoes into 1/4-inch-thick rounds. Peel the celery root and cut into 1/4-inch-thick slices to resemble the potatoes.
• Butter a heavy oval casserole dish. Layer the potatoes in the bottom of the dish, followed by the butter and then a layer of celery root. Sprinkle with sea salt. Top with a layer of half of the cheese. Repeat with the remaining potato and celery root. Top with the cream and then the remaining cheese.
• Bake until deep golden brown, about 1 hour.

GRATIN OF CELERY ROOT

Steps:

• Trim and peel celery root. Cut in three-fourth-inch cubes, placing them in a bowl of water as you proceed.
• Combine in saucepan with broth, milk, water, savory and one teaspoon salt; liquid should not quite cover. Gently simmer, covered, until barely tender -- about 10 minutes.
• With a slotted spoon transfer cubes to buttered shallow baking dish of one-and-a-half quart capacity. Strain and reserve liquid. Heat butter in rinsed-out saucepan. Add flour; stir on low heat until golden. Add one-and-a-half cups cooking liquid. Whisk over moderate heat until liquid boils.
• Sprinkle nutmeg on celery root. Season sauce with salt and pepper to taste; pour over cubes. Sprinkle cheese to cover evenly. Bake in center of preheated 350-degree oven for about 35 minutes, until lightly browned and bubbly.

FENNEL AND CELERY ROOT CASSEROLE

Steps:

• Preheat an oven to 375 degrees F (190 degrees C).
• Bring a large steamer pot of water to a boil. Place fennel, celery root, and onion slices in the steamer insert. Steam until tender, approximately 7 to 10 minutes.
• Spread the steamed vegetables and apple slices evenly in the bottom of an 8 x 8-inch baking dish. Sprinkle with salt and pepper. Pour cream around the sides of the dish until the liquid reaches half-way to the top. Sprinkle with shredded cheese, and cover tightly with foil.
• Bake in preheated oven until hot and bubbly and cheese has melted, approximately 40 minutes.

CELERY ROOT GRATIN

Steps:

• Peel and coarsely chop the potatoes and the celery root. Put potatoes and celery root in separate pots and add salt to each.
• Boil the potatoes and celery root until soft, and then drain them.
• Pour the heavy cream into a pot and bring it to a boil. Add the butter, saffron, garlic, and 1 cup of the gruyere. Cook about 5 minutes over moderately low heat until the cream mixture is bright yellow.
• Puree drained celery root in food processor, gradually adding yellow cream mixture.
• Mash the drained potatoes to a rough texture.
• Add pureed celery root to mashed potatoes. Add the rest of the gruyere and mix together. Season with salt and pepper.
• Butter a 13 by 9-inch gratin dish and put the puree in it. Sprinkle with the parsley.
• Bake at 400 degrees for about 15 minutes.

FENNEL, APPLE AND CELERY ROOT GRATIN

Steps:

• Preheat oven to 375 degrees F. Butter a 2-quart gratin dish or other ovenproof casserole.
• Cut off the entire rough exterior of the celery roots, making sure that all brown parts are removed. You will be removing about 1/4 to 1/2-inch of the exterior of each. Next, cut each celery root in 1/2 lengthwise. Turn one 1/2 cut side down, and cut into 1/4-inch wide pieces. Repeat with the remaining celery root. Set aside.
• Cut off the fronds and the dark green parts of each fennel bulb, leaving just the bulb. Cut each bulb in half lengthwise. Cut each half lengthwise into 1/4-inch thick slices.
• In a vegetable steamer, combine the celery root and fennel and steam for 5 minutes. Remove from the steamer and set aside to cool slightly.
• Cut the apples into 1/4-inch-thick rings.
• Place 1/3 of the celery root on the bottom of the prepared dish. Sprinkle with salt and pepper to taste. Overlap with 1/3 of the apple slices, and sprinkle with a little more salt but no pepper. Put 1/3 of the fennel over the apples, and once again sprinkle with salt and pepper. Repeat with the remaining celery root, apple, and fennel. Pour cream around the sides of the dish until the cream reaches about halfway up the dish. Sprinkle the top of the gratin with the cheese. Cover and bake for 35 minutes, or until the vegetables and apple feel tender when pierced with a fork or a skewer. Turn the oven to broil, remove the cover, and broil until the gratin is golden brown and bubbling, about 3 minutes.
• Let cool 15 minutes to allow the cream to firm up slightly and serve.

POTATO AND CELERY ROOT GRATIN WITH CAPER BROWN BUTTER

Steps:

• Heat the oven to 375 degrees Fahrenheit/180 degrees Celsius.
• Add 2 tablespoons/30 grams of butter and all the oil to a medium (10-inch/26-centimeter) ovenproof sauté pan over medium-high heat. Once melted, add the onions and 1/2 teaspoon salt, turn the heat down to medium-low and cook, stirring occasionally, until onions are softened and have taken on a light coloring, about 15 minutes. Add the garlic and thyme leaves, and cook for another 3 minutes, stirring occasionally, until fragrant. Stir in the miso and wine, and cook until liquid is reduced by half, about 4 more minutes. Remove from the heat.
• In a large bowl, very gently toss together celery root (celeriac), potatoes and flour with 1 1/2 teaspoons salt and a generous grind of pepper. Stir in the onion mixture to coat, then transfer everything back into the skillet, piling the vegetables haphazardly, so that the batons are pointing in different directions. Pour in the stock. Lightly grease a piece of foil with a little oil, then tightly cover the pan (oiled side down) and bake for 1 hour, or until the vegetables have cooked through.
• Remove the foil, and turn the oven temperature up to 450 degrees Fahrenheit/210 degrees Celsius. Sprinkle over the Gruyère and return the dish to the oven for 30 minutes, or until nicely browned on top, rotating the dish halfway. Leave to settle for at least 20 minutes while you make the brown butter (beurre noisette).
• Add the remaining butter and the thyme sprigs to a small saucepan, and place it over medium heat. Once melted, cook for 3 to 5 minutes, stirring occasionally, or until it starts to smell nutty (add more or less time if necessary). Add the capers (carefully, as they might spit) and cook for 4 more minutes, or until they darken and burst. Off the heat, stir 1 tablespoon lemon juice from 1 lemon, chives and another good grind of pepper.
• Pour the caper brown butter all over the top of the gratin and serve warm, with the remaining lemon sliced into wedges to squeeze alongside.

POTATO & CELERY ROOT GRATIN WITH LEEKS

Steps:

• Preheat oven to 350°F. Heat cream, garlic, and thyme sprig in a medium saucepan just until bubbles begin to form around edge of pan. Remove from heat; set aside to steep.
• Melt 1 tablespoon butter in a medium skillet over medium heat. Add leeks; season with salt and cook, stirring often, until tender (do not brown), 10-12 minutes. Transfer to a small bowl and set aside.
• Butter a 3-quart gratin dish with remaining 1 tablespoon butter. Layer 1/3 of potato slices and 1/3 of celery root slices evenly over bottom of baking dish. Cover with 1/3 of leeks, then 1/3 of Gruyère. Sprinkle with salt, pepper, and 1 teaspoon thyme leaves. Repeat layers twice more. Strain cream mixture into a medium pitcher and pour over vegetables.
• Set gratin dish on a large rimmed baking sheet and cover tightly with foil. Bake for 1 hour. Carefully remove foil; continue baking until top is golden brown and sauce is bubbling, 25-30 minutes. DO AHEAD: Can be made 2 hours ahead. Let stand at room temperature. Tent with foil and rewarm in a 300° oven until hot, about 20 minutes.

FENNEL GRATIN

Steps:

• Toast the bread crumbs: Heat oven to 250 degrees. Remove crust from bread and slice 1/4 inch thick, then tear slices into 1/2 inch pieces. Spread on a baking sheet and bake for 40 to 45 minutes, until completely dry and brittle, but without any color. Let cool, then break into roughly pebble-size pieces and place between 2 sheets of parchment paper or in a plastic bag. Gently roll a rolling pin across the surface several times until crumbs have a rustic texture - larger than a grain or rice but smaller than a pea. Measure 3/4 cup crumbs and set aside. (Reserve leftover crumbs for another purpose.)
• Meanwhile, prepare the fennel: Chop 3 tablespoons fronds and set aside. If you're using large bulbs, cut lengthwise into quarters; if you're using small bulbs, cut lengthwise in half. Leave base fully attached in both instances. Turn fennel pieces cut side up and season with salt and pepper.
• Heat your largest sauté pan over medium-high heat. Add oil and butter. Then, working in batches to avoid overcrowding, add fennel cut side down and sear until deep chestnut brown, 2 to 3 minutes. If fennel is quartered, flip pieces to sear the other cut surface for 2 to 3 minutes more. Transfer fennel to a large Dutch oven.
• Add stock and wine to Dutch oven, place over low heat, cover and simmer until fennel is fork-tender but not mushy, 20 to 25 minutes. Using tongs or a slotted spoon, place fennel neatly in a 9 by 13-inch broiler-proof baking dish and set aside.
• Prepare the bread crumb topping: In a medium saucepan over medium-low heat, melt butter. Add bread crumbs, garlic paste, fennel pollen and pepper and cook, stirring often, until crumbs are pale gold, 2 to 3 minutes. Don't let them take on too much color. Remove pan from heat and stir in chopped fennel fronds.
• Make the cheese sauce: In a saucepan over medium heat, melt butter and whisk in flour. Whisk for about 1 minute, then add garlic paste. Whisk until flour begins to take on a pale gold color, 2 to 3 minutes; you want a shade between off-white and not quite beige.
• Gradually whisk in milk. Once all of the milk has been added, whisk vigorously until sauce is completely smooth; turn down heat to medium-low and simmer, whisking periodically to avoid scorching, until sauce fully thickens, 10 to 12 minutes. Turn off heat, whisk in Gruyère, and season with salt and pepper. The sauce should be very thick.
• To assemble: Place a rack in the upper third of the oven and heat to 350 degrees. Pour cheese sauce over fennel (very gently reheat sauce if cold), and sprinkle with Gruyère and Parmigiano-Reggiano. Bake until bubbling and beginning to brown, 15 to 20 minutes.
• Remove gratin from oven and scatter bread crumb topping in an even layer across the top. Continue to bake until gratin takes on a deep golden hue, about 5 minutes. If it needs more color, place dish under the broiler for 1 minute, watching it very carefully to ensure nothing burns. Serve immediately.