Best Sweet Potato Cauliflower Gratin With Crispy Sage Leaves Recipes

SAGE POTATOES AU GRATIN

Steps:

• Preheat the oven to 400 degrees F. Butter an 8 by 8-inch casserole dish using 1 tablespoon of the butter.
• In a pot, add the heavy cream, 1/2 teaspoon salt, and sage leaves. Bring to a simmer and steep for 10 minutes. While steeping, peel and slice the potatoes 1/8-inch thick on a mandolin. Begin to layer the potatoes on the bottom of the prepared dish, overlapping each slice by half. When the first layer of potatoes is complete, season with salt, cayenne pepper, and sprinkle with a third of the cheese. Repeat two more times, ending with a final layer of just potatoes.
• Strain the heavy cream and discard the sage. Pour the heavy cream over the casserole, pressing the potatoes down. Dot the remaining 2 tablespoons butter in pieces evenly over the top of the potatoes. Cover with aluminum foil and place in the oven, lowering the temperature to 350 degrees F. Bake, covered, for 40 minutes. Uncover and bake 20 minutes more. Serve hot.

SWEET POTATO-CAULIFLOWER GRATIN WITH CRISPY SAGE LEAVES

Steps:

• Heat oven to 350 degrees. Heat olive oil in a small pot over medium heat. Add flour and cook, stirring, 1 minute. Slowly whisk in milk and 1 cup water. Cook, whisking, until thick enough to coat the back of a spoon, about 12 minutes. Remove from heat and stir in 1/4 cup Parmesan and the chopped sage. Season with salt and pepper.
• Pour a third of the sauce in the bottom of a 9-by-13-inch casserole dish. Arrange a third of the sweet potato and cauliflower slices along the bottom. Season with salt and pepper. Repeat twice with remaining sauce and vegetables. Cover dish with parchment-lined foil and bake until vegetables are tender, about 1 hour. Raise oven temperature to 425 degrees. Remove foil and sprinkle with remaining tablespoon of cheese. Bake until golden brown, about 20 minutes. Let stand 10 minutes before serving.
• Meanwhile, crisp sage leaves: Heat 1 inch vegetable oil in a small pot over medium-high heat until surface is shimmering slightly. Add a few leaves at a time (they'll bubble up) and cook until crisp, but still bright green, about 10 seconds. Transfer to a paper towel to drain. Season with salt. Top gratin with leaves.

SWEET POTATO AND GRUYèRE GRATIN

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.