Best 9 Warm Onion Potato Gratin Recipes

SWEET ONION POTATOES AU GRATIN

Steps:

• Heat a small skillet with the butter over medium heat. Add the onions, season with salt ground thyme, bay leaf and cook until very soft and sweet and lightly caramelized, 20 minutes. Season with salt and pepper, to taste, and discard the bay leaf.
• While the onions cook, put the potatoes in a medium pot and cover with water. Bring to a boil, then salt the water and cook to tender, 12 to 15 minutes. Drain and return the potatoes to the hot pot. Mash the potatoes with the cream and Parmesan and season with salt and pepper, to taste.
• Preheat the broiler.
• Arrange the mashed potatoes in individual gratin dishes or 1 shallow casserole. Top the potatoes with the onions and Gruyere cheese. Put them on a sheet pan and brown under a hot broiler until bubbly, about 2 minutes. Remove from the oven and serve hot.

POTATO GRATIN WITH SPRING ONIONS

Steps:

• Preheat the oven to 375 degrees F. Combine the heavy cream, thyme, bay leaves, garlic and nutmeg in a medium saucepan. Bring to a gentle simmer over medium heat. Add the spring onion whites and simmer until just starting to soften, about 5 minutes. Season with 1 1/2 teaspoons salt and a few grinds of pepper. Remove the thyme sprigs and bay leaves. Stir in about half of the spring onion greens.
• Spread the potatoes in a 9-by-13-inch baking dish. Pour the cream mixture over the top and gently stir, pressing and submerging the potatoes to make an even layer. Cover with foil and bake until the potatoes are tender and the cream is bubbling, 45 to 55 minutes.
• Uncover the potatoes and sprinkle with the cheese. Bake until the cheese is golden, 10 to 15 minutes. Let cool 15 minutes. Sprinkle with the remaining spring onion greens just before serving.

CREAMY POTATO GRATIN WITH CARAMELISED ONIONS

Steps:

• Up to 2 days before serving, heat oven to 200C/180C fan/gas 6. Heat the oil in a large frying pan. Add the onions and thyme, cover, and cook over a gentle heat for 10-15 mins until softened and caramelised. Pour the cream and milk into a large bowl and season well. Add the potatoes and mix to combine.
• Butter a 23 x 28cm ovenproof dish, then layer in half the potatoes. Spread the onion mixture on top, then layer on the remaining potatoes. Press down with your hands. Pour over the milk mixture, which should come just level with the potatoes. If not, add a little more milk until it does. Cover with foil, then bake for 11⁄2 hrs until tender. Remove from the oven and leave to cool. Cover and store in the fridge.
• On the day, heat the oven to 220C/200C fan/gas 7. Uncover the gratin, spread the crème fraîche on top, then sprinkle over the Parmesan. Put in the oven and cook for 30 mins until the cheese is melted, the top crisp and golden brown, and the gratin piping hot. Serve garnished with extra thyme.

PARMESAN-CRUSTED AU GRATIN POTATOES AND ONION

Steps:

• Place potatoes into a large pot and cover with water; add salt and bring to a boil. Reduce heat to medium-low and simmer until just beginning to soften, 15 to 20 minutes; drain.
• Melt butter in a saucepan over medium heat; add flour and whisk until the mixture thickens, 1 to 2 minutes. Pour milk and heavy cream into the saucepan; cook and stir until smooth, 2 to 3 minutes. Melt Cheddar and Asiago cheese into the butter mixture; cook while stirring continually until the mixture is smooth and creamy, 1 to 2 minutes. Season the sauce with salt and pepper.
• Preheat oven to 400 degrees F (200 degrees C). Butter a 9x13-inch casserole dish.
• Layer about half the sliced potatoes into the bottom of the baking dish. Top the potatoes with sweet onion slices and green onions; pour about 1/3 of the cheese sauce over the onions. Arrange the remaining potato slices into the dish; pour remaining cheese sauce over the potatoes. Sprinkle Parmesan cheese and crushed crackers over the top.
• Bake in the preheated oven until hot in the center and beginning to brown at the edge, about 30 minutes. Sprinkle parsley over the top of the dish to serve.

WARM ONION-POTATO GRATIN

Steps:

• Combine Yukon Gold potatoes and sliced onions in heavy large saucepan. Add enough water to cover. Bring water to boil. Reduce heat and simmer until potatoes are almost tender, about 3 minutes. Drain potato-onion mixture well.
• Arrange half of potato-onion mixture in 11x7-inch glass baking dish. Sprinkle with salt and pepper. Sprinkle mixture with 1/3 cup Gruy&ère cheese, then 2 tablespoons Parmesan cheese. Arrange remaining potato-onion mixture atop cheeses. Pour cream over. Sprinkle with salt and pepper, then remaining 2/3 cup Gruy&ère cheese and 6 tablespoons Parmesan cheese. (Can be prepared 8 hours ahead. Cover and refrigerate.) Preheat oven to 400°F. Bake gratin uncovered until cream thickens, about 25 minutes. Remove from oven. Preheat broiler. Broil gratin until top is golden, about 2 minutes.

POTATO GRATIN WITH CARAMELIZED ONIONS

Steps:

• In saucepan, bring cream, garlic, peppercorns, thyme and salt to boil, reduce heat to low, cover and simmer for 15 minutes.
• Remove from heat and set aside.
• Meanwhile, in nonstick frypan, heat oil over medium low heat; cook onion, stirring often, until light brown, about 45 minutes.
• Slice potatoes as thinly as possible, use mandoline if available.
• Layer one quarter of the potatoes in greased 8 inch square glass baking or casserole dish; top with one third of the onion and one quarter of the cheese.
• Repeat twice.
• Top with remaining potatoes.
• Strain cream mixture over potatoes, shaking casserole to distribute evenly; sprinkle with remaining cheese.
• Bake at 300f degree oven until tender and knife inserted in bottom pierces potatoes easily, 1 1/2 to 2 hours.
• (Make ahead: let cool; cover and refrigerate for up to 2 days. Reheat in 375f degree oven for 30 minutes.).

POTATO, ONION, AND TOMATO GRATIN

Steps:

• Coat bottom and sides of a large oval glass or ceramic gratin dish with
• olive oil.
• Arrange a layer of 1/2 of potatoes in the dish.
• Top with 1/2 of onions, then 1/2 of tomatoes.
• Sprinkle with salt and pepper.
• Drizzle with 1/4 cup olive oil.
• Sprinkle with 1/2 of cheese.
• Repeat process to use remaining ingredients.
• Bake in a preheated 375-degree oven about 1 1/4 hours or until golden
• and bubbly.
• Serve hot with fish or meat.

POTATO GRATIN

Steps:

• Preheat the oven to 400 degrees.
• Coat an 11-inch gratin dish or glass pie plate with 3 sprays of the vegetable oil.
• Layer a third of the potatoes over the bottom of the prepared gratin dish or pie plate, overlapping the slices in a spiral pattern. Sprinkle 1 tablespoon of the flour and some of the optional salt over the potatoes; arrange the onion rings on top. Dust with the cayenne pepper and 1/2-teaspoon of the paprika.
• Layer another third of the potatoes, adding the remaining tablespoon of flour, the black pepper and 1 tablespoon of the Parmesan cheese.
• For the next layer, scatter the zucchini, and dust with the nutmeg, Spike seasoning and remaining optional salt. Top with a spiral layer of the remaining potatoes.
• Pour the evaporated milk over the gratin, and add the remaining paprika and Parmesan cheese.
• Cover with aluminum foil, and bake for 45 minutes. Remove the foil, lower the oven to 350 degrees and bake for about 15 minutes more, until the top is golden brown. Remove from the oven, and allow to cool for 10 minutes.
• Garnish with chopped parsley.

GRATIN OF ONIONS

Steps:

• In a large saucepan mix together the onions, stock, grits, salt and pepper. Bring the mixture to a boil, reduce the heat to low, and cook gently for 20 to 25 minutes, stirring the mixture two or three times to prevent it from sticking to the pan, until the onions and grits are very tender.
• Preheat oven to 400 degrees. Butter a 6-cup gratin dish with about 1/4 teaspoon of the butter and add the remainder of the butter to the onion mixture. Using a hand blender or a food processor, puree the onion-and-grits mixture until it is smooth, and then pour it into the prepared dish. Sprinkle with the cheese.
• Place the gratin in the oven for about 15 minutes if the mixture is still warm when it goes into the oven, or about 30 minutes if the mixture has cooled. If the top needs additional browning, place the gratin under a hot broiler for a few minutes before serving.