Root Vegetable Gratin Recipes

Steps:

• 1. Preheat the oven to 400 degrees F. Lightly grease a 13- x 9-inch baking dish. Using a mandoline or sharp knife, cut the potatoes, beet, fennel and parsnips into 1/8-inch-thick slices. Toss together the vegetable slices, salt, and 3/4 cup of the cream in a large bowl.
• 2. Spread half of the mixture evenly in the prepared baking dish. Top with 1 cup of the Parmesan. Top evenly with the remaining vegetable mixture. Pour the remaining 3/4 cup cream over the vegetables, and top with the remaining 1/2 cup Parmesan. Cover loosely with aluminum foil. Bake for 1 hour and 10 minutes.
• 3. Uncover and bake until the vegetables are tender and the cheese is golden brown, another 20 to 25 minutes. Transfer to a wire rack; cool for 15 minutes before serving with some black pepper ground over the top.

Steps:

• Preheat the oven to 375 degrees F. Spray a 9-by-13-inch baking dish with nonstick cooking spray.
• Combine the heavy whipping cream, chicken stock, butter, thyme, garlic and Parmesan rind in a small saucepot. Place over medium-low heat and cook just until simmering, 10 to 12 minutes. Turn off the heat and whisk in the flour. Strain the cream mixture through a colander into a container with a pour spout and discard the thyme stems, garlic and cheese rind.
• Spread the potato rounds in an even layer in the bottom of the prepared baking dish. Pour a third of the cream mixture over the potatoes. Sprinkle with 1/2 teaspoon salt, 1/4 teaspoon pepper and 1/2 cup grated cheese. Next, shingle half the carrots and parsnips in alternating rows in an even layer. Pour a third of the cream mixture over the top, then sprinkle with salt, pepper and 1/2 cup cheese. Finally, shingle the remaining parsnips and carrots in alternating rows in an even layer. Use your hands to lightly press down on the vegetables to even out, if needed. Pour the remainder of the cream mixture over the top, then sprinkle with salt and pepper. Reserve the remaining cheese (about 1 cup).
• Cover the baking dish tightly with aluminum foil and bake until the vegetables are fairly tender and the sauce is simmering, about 1 hour. Remove the foil and sprinkle the top of the gratin with the remaining cheese. Bake, uncovered, until the cheese is lightly browned and the vegetables are tender, another 30 minutes.
• Cool for at least 10 minutes before slicing. Serve warm.

Steps:

• Preheat the oven to 375 degrees F (190 degrees C).
• Bring a large pot of generously salted water to a boil. Add the vegetables, and cook uncovered for 3 minutes. Drain in a colander, then immediately immerse in ice water for several minutes until cold to stop the cooking process. Once the vegetables are cold, drain well, and set aside.
• Cook garlic and butter in a large skillet over medium heat until garlic starts sizzling, about 3 minutes.
• Stir in chicken broth, heavy cream, thyme, nutmeg, and cayenne pepper; cook until mixture begins to simmer, about 5 minutes.
• Coat a 9x13-inch baking dish with olive oil and spread vegetables evenly over the oil.
• Pour broth and cream mixture over vegetables and top with half of the grated Parmigiano-Reggiano cheese.
• Cover baking dish loosely with aluminum foil, place on a baking sheet, and bake in the preheated oven for 40 minutes.
• Remove baking dish from the oven and top with remaining Parmigiano-Reggiano. Bake uncovered until vegetables are browned, bubbling, and tender, about an additional 30 minutes.
• Remove from the oven and let rest for 20 minutes.

Steps:

• Preheat the oven to 180C/gas 4/fan 160C and butter a shallow ovenproof dish. Layer the potatoes, then the parsnip in the bottom of the dish with two of the sliced garlic cloves and sprinkle over a little salt and half the rosemary. It's best to keep the potatoes buried under the other vegetables because they go black if they are on top of the gratin.
• Pour the cream and milk into a large saucepan, add the rest of the rosemary and garlic, the carrots and a little seasoning. Bring to the boil, then turn the heat to the lowest it will go and simmer for 3 minutes.
• Pour the carrots and cream over the other vegetables, and spread the carrots out. Sprinkle over the parmesan, cover with foil and bake for 40 minutes. Remove the foil and bake a further 20 minutes until golden and bubbly.

Steps:

• Put oven rack in upper third of oven and preheat oven to 400°F.
• Peel parsnips and cut crosswise into 3-inch lengths with a knife, then cut lengthwise around core into 1/8-inch-thick slices with slicer (discard core). Transfer to a large bowl.
• Peel celery root and all potatoes (prepare russet potatoes last to avoid discoloration) and halve lengthwise, then cut crosswise into 1/8-inch-thick slices with slicer. Add to parsnips along with salt, garlic, pepper, nutmeg, broth, and 1 3/4 cups cream, tossing to combine. Transfer to gratin dish, spreading evenly.
• Cut out a piece of parchment or wax paper to fit just inside gratin dish, then butter 1 side of parchment. Cover vegetables directly with parchment, buttered side down, then put dish in a shallow baking pan (to catch any drips). Bake until gratin is bubbling all over and vegetables are tender when pierced with a knife, about 50 minutes. Discard parchment.
• Just before serving, preheat broiler. Drizzle top of gratin with remaining 2 tablespoons cream and broil 4 to 6 inches from heat until browned, 2 to 3 minutes.

Steps:

• Preheat oven to 400°F. Butter a shallow 2-quart baking dish. Melt 2 tablespoons butter in a medium skillet over medium-high heat. Add breadcrumbs; cook, stirring often, until golden brown, 5-7 minutes. Transfer to a small bowl and toss with 1/2 cup Parmesan and 1 tablespoon thyme leaves; season with salt and pepper.
• Bring cream, broth, thyme sprigs, and remaining 2 tablespoons butter to a simmer in a medium saucepan over medium heat; season with salt and pepper. Remove from heat, cover, and let sit 10 minutes; discard thyme. Cover and keep warm.
• Toss vegetables and garlic in a large bowl; season with salt and pepper. Arrange 1/3 of vegetables in dish and top with 1/2 cup Parmesan. Repeat layers; top with remaining vegetables. Pour cream mixture over; place a piece of parchment paper directly on top of vegetables.
• Bake until vegetables are crisp-tender and cream is thickened, 50-60 minutes. Uncover, top with breadcrumbs, and bake until gratin is bubbling and breadcrumbs are brown, 15-20 minutes longer. Let sit 10 minutes before serving.

Steps:

• Peel the vegetables (or leave the potatoes unpeeled for more vitamin content). Slice all vegetables into rounds no more than 1/8" thick. Mince the garlic fine. Rub the bottom and sides of a large oval glass or ceramic casserole pan with some of the butter. Now lay the sliced vegetables in layers in the pan, using one type of vegetable per layer. Sprinkle each layer with salt and pepper to taste, then with minced garlic and grated Gruyere; dot each layer with pieces of butter. When all the veggies have been layered, pour in the milk to come halfway up the vegetable layers. Cover with foil and bake 30 minutes at 350 degrees. Remove the foil, dot the top of the casserole with the goat cheese, and bake 30 minutes more, or until vegetables are soft, cheese has turned golden, and the casserole is bubbly. Let it sit for 10 minutes, then sprinkle with the parsley and serve directly from the casserole.

Steps:

• Heat oven to 180C/160C fan/gas 4. Melt half the butter in a large saucepan, add the onion and cook until soft. Pour in the cream and milk, and add lots of seasoning. Add the sliced vegetables and gently simmer for 10 mins until the potatoes start to soften.
• Meanwhile, blend the herbs, garlic, most of the Parmesan and some seasoning in a food processor. Add the oil and blend again to form a paste.
• Tip a third of the creamy veg into a buttered baking dish, dollop over half the herb mix and spread out a little. Top with another third of the veg, followed by the remaining herb mix, then the rest of the vegetables. Dot the surface with the remaining butter and scatter over the reserved Parmesan. Bake for 1-1½ hrs until bubbling and golden, covering with foil for the final 30 mins if it's becoming too brown. Leave to rest for 10-15 mins before serving.

Steps:

• Preheat oven to 350 degrees.
• Spray a shallow 9-by-13-inch baking dish with nonstick cooking spray. Sprinkle bottom of dish with salt and pepper. Set aside 1 cup cheese. Place a layer of sweet potatoes, in an overlapping fashion, on bottom of baking dish; sprinkle with some of the remaining 2 cups cheese. Top with a layer of yellow beets, overlapping in the same fashion; sprinkle with more of the remaining cheese. Repeat process making a layer of parsnips, followed by celery root, and Yukon gold potatoes, topping each layer evenly with some of the remaining cheese.
• Gently pour cream over vegetables. Cover baking dish with parchment paper-lined aluminum foil; place baking dish on a rimmed baking sheet. Transfer to oven and bake until a knife is easily inserted into gratin. Uncover and sprinkle reserved cheese over top; increase oven temperature to 425 degrees. Return baking dish to oven and continue baking until cheese is browned and bubbly, about 15 minutes more.
• Remove baking dish from oven and let gratin stand 30 minutes before serving.

Steps:

• Heat oven to 350°F.
• Peel, then cut all vegetables into thin slices. Reserve half the vegetables for later use. Arrange remaining vegetables, with slices slightly overlapping and in alternating groups of 3 vegetable slices each, in concentric rows in 12-inch cast-iron skillet, starting at edge of skillet and covering bottom of half the skillet. Sprinkle half of each of the cheeses evenly over vegetables in skillet.
• Repeat with rows of reserved vegetables to evenly cover bottom of skillet.
• Mix milk, parsley, dry seasonings and remaining Parmesan until blended; drizzle over ingredients in skillet. Top with remaining shredded cheese; cover.
• Bake 1 hour or until vegetables are tender, uncovering after 30 min.