Sweet Potato Leek Gratin Recipes

Steps:

• Preheat the oven to 350 degrees F.
• In a large skillet, heat 1 tablespoon of the oil over medium heat. Add the leeks and 2 tablespoons water; season with salt and pepper. Cook, stirring occasionally, until tender but not browned, about 8 minutes. Add the thyme and then the cream and cook until the liquid thickens, about 2 minutes; set aside.
• In a 2-quart shallow baking dish, arrange the sweet potato in overlapping layers. Spread the leek mixture evenly over the potatoes. Arrange the apples in an overlapping layer on the leeks. Brush the apples with the remaining tablespoon of oil and sprinkle with the Parmesan. Cover tightly with aluminum foil and bake 40 minutes. Uncover and continue to bake until the Parmesan is golden brown and melted, about 20 minutes more. The tip of a paring knife should easily pierce the apples and potatoes. Let cool 10 minutes before serving.

Steps:

• Preheat the oven to 400 degrees F (200 degrees C). Lightly grease a 9x13-inch baking dish.
• Stir together cream, milk, butter, and garlic in a small saucepan over medium heat and bring to a simmer. Remove from heat and stir in parsley, thyme, sage, rosemary, salt, and pepper.
• Arrange 1/2 of the sweet potatoes in the bottom of the prepared baking dish, pour 1/2 of the cream mixture on top, and sprinkle with 1/2 of the Gruyere cheese. Repeat layers once more; cover with aluminum foil.
• Bake in the preheated oven for 30 minutes. Remove foil and continue to bake, uncovered, until potatoes are tender and cream and cheese mixture is bubbly and golden brown, about 15 minutes. Remove from the oven and allow to sit for 10 minutes before serving.

Steps:

• Preheat oven to 400°F with rack in middle. Generously butter a 3-qt shallow baking dish. Cut a round of parchment paper to fit just inside a 12-inch heavy skillet, then set parchment aside.
• Halve leeks lengthwise, then cut crosswise into 1 1/2-inch pieces (you should have about 8 cups). Wash leeks.
• Cook leeks in butter with 1/2 tsp salt and 1/4 tsp pepper, covered with parchment round, in skillet over medium heat, stirring occasionally, until tender, 10 to 12 minutes.
• Meanwhile, peel potatoes and slice crosswise 1/16 inch thick with slicer. Transfer to a large heavy pot with cream, milk, thyme, 1 tsp salt, and 1/2 tsp pepper and bring to a boil over medium heat, stirring occasionally (liquid will thicken). Stir in leeks, then transfer to baking dish.
• Bake, uncovered, until potatoes are tender, 45 minutes to 1 hour. Let stand 10 minutes before serving.
• Do Ahead
• Gratin can be baked 2 days ahead and chilled. Let stand at room temperature 30 minutes, then reheat, covered, in a 350°F oven until hot, about 30 minutes.

Steps:

• Heat oven to 400 degrees and generously butter a 9-by-13-inch baking pan or shallow gratin dish. Butter a piece of foil large enough to cover top of pan. Sprinkle Parmesan all over bottom of pan.
• In a medium pot, bring cream, sage, rosemary, garlic, nutmeg and a pinch of salt to a simmer. Simmer until reduced by 1/4, about 10 minutes.
• In a large, heatproof bowl, whisk eggs just enough to break them up. Slowly pour hot cream into eggs to combine, whisking while pouring, and reserve the mixture.
• Meanwhile, using a mandoline or sharp knife, slice the potatoes into 1/8-inch-thick rounds.
• Place 1 layer of potatoes in the pan, slightly overlapping as you go, using about a third of the slices. Sprinkle with 1/4 teaspoon salt and pepper to taste, then pour 1/3 of the egg mixture over potatoes. Top with 1/2 cup Gruyère. Repeat with another layer of potatoes, 1/2 teaspoon of salt, pepper and 1/3 egg mixture. Top with 1/2 cup Gruyère. Top with remaining potatoes, 1/4 teaspoon salt, pepper to taste, and remaining egg mixture (but not the remaining cheese). Press down to compact the potatoes. Cover with foil and bake until potatoes are tender, about 40 minutes, then remove foil, sprinkle top with remaining 2/3 cup Gruyère and bake until browned and bubbling, 25 to 30 minutes. Let cool slightly, then serve.

Steps:

• Preheat the oven to 400 degrees F (200 degrees C). Grease a baking dish with cooking spray.
• Combine cream, butter, and garlic in a saucepan. Bring to a simmer; remove from heat and mix in parsley, thyme, sage, rosemary, salt, and pepper.
• Arrange 1/2 of the sweet potato slices in the prepared baking dish; cover with 1/2 of the Gruyere cheese. Pour cream mixture on top. Arrange remaining sweet potato slices over the cream. Sprinkle remaining cheese on top.
• Bake in the preheated oven until golden brown and bubbly, about 30 minutes.

Steps:

• Place potatoes in a Dutch oven and cover with water. Bring to a boil. Add leeks; return to a boil. Cover and cook for 5 minutes. Drain and pat dry. Place in a greased 13-in. x 9-in. baking dish., In a large saucepan, melt butter. Stir in the flour, salt and pepper until smooth; gradually add milk. Bring to a boil; cook and stir for 2 minutes or until thickened. Stir in cheese and nutmeg until cheese is melted. Pour over potato mixture. Toss bread crumbs and butter; sprinkle over the top. , Cover and bake at 325° for 40 minutes. Uncover; sprinkle with cheddar cheese. Bake 15-20 minutes longer or until potatoes are tender.

Steps:

• Lift the leeks from the water in which they're soaking so any sand remains in the water. Drain the leeks in a colander. Melt the butter and olive oil in a 2-quart saucepan over medium heat and stir in the leeks, and garlic. Cover and lower the heat. Cook slowly, stirring occasionally, until the leeks are softened, about 5 minutes. Add the cream, bring to a simmer, and cook over low heat for 5 minutes. Stir in the currants or prunes, fresh thyme, salt, and pepper to taste. Set aside. Preheat oven to 350 degrees. Butter a heavy-bottomed 5-quart casserole. Using a Japanese mandoline or a sharp knife, slice the sweet potatoes 1/4 inch thick. Do the same with the Idaho potatoes. Beginning with Idaho potatoes, arrange a layer of potatoes on the bottom of the casserole. Season lightly with salt and pepper, then spoon 2 tablespoons of leek cream over the potatoes. Repeat with sweet potatoes: layer, season, and spoon leek cream over them. Continue in this way, alternating Idaho and sweet potatoes, until all are used. With your hand, or a rubber spatula, press down firmly on the potatoes. Drizzle the remaining leek cream over the top layer. Bake 50 to 60 minutes, until the gratin is bubbling around the edges and a knife slides into it easily. Remove to a warm place and let rest for 15 minutes. Slice the gratin into wedges or squares and serve. It may be prepared ahead and reheated in a 300-degree F. oven.

Steps:

• Heat oven to 350 degrees and butter a 2-quart gratin dish. Wash the leeks to remove any grit and slice thinly crosswise.
• Using a mandoline or sharp knife, slice the potatoes into rounds, 1/8-inch thick. Toss with 3/4 teaspoon salt and 1/4 teaspoon pepper. Layer the rounds in the gratin dish.
• Melt the 2 tablespoons butter in a large skillet over medium heat. Add leeks, remaining salt and pepper, and thyme. Cook, stirring, until leeks are tender and golden, 5 to 7 minutes. Discard thyme and scatter the leeks over the potatoes.
• Add cream, garlic and bay leaf to the skillet, scraping up browned bits of leeks from the bottom of the pan. Simmer gently for 5 minutes. Stir in nutmeg.
• Pour the cream over the leeks and potatoes and top with the Gruyère. Cover with aluminum foil and transfer to the oven. Bake for 40 minutes, uncover and bake until the cheese is bubbling and golden, 15 to 20 minutes longer. Let cool slightly before serving.

Steps:

• Pour the stock, cream and milk into a small saucepan, add the garlic and bay leaf and bring to the boil. Remove from the heat, cover and let the flavours infuse while you get on with the rest of the dish.
• Preheat the oven to 180C/gas 4/fan 160C. Butter a 2 litre gratin dish well. Mix the potatoes, leeks and ham (if using) together in the dish, and spread out in an even layer. Pour over the stock mixture and tuck the bay leaf in the middle. Season and sprinkle with the cheese.
• Stand the dish on a baking tray to catch any spills. Loosely cover with foil and bake for 30 minutes. Test the potatoes with a knife - they should be just beginning to soften. Remove the foil and bake for another 35-45 minutes, spooning some of the stock mixture over every now and again until the potatoes are tender. Cool for 15 minutes before serving.