The Best Onion Gratin Recipes

ONION GRATIN RECIPE

Steps:

• Melt the butter in a cast iron skillet over a medium flame until it begins to foam, toss the sliced onions into the hot fat and fry them, stirring frequently, until they release their fragrance and become tender and translucent.
• Preheat the oven to 425 degrees Fahrenheit.
• While the oven preheats, reduce the heat to medium-low, pour two cups cream into the skillet over the onions and simmer them together until cream thickens and is reduced by half, about fifteen minutes.
• In a separate bowl, stir two cups whole grain sourdough bread crumbs with two tablespoons minced fresh thyme and one-quarter cup minced Italian flat-leaf parsley. Season the mixture of breadcrumbs and herbs with unrefined sea salt as it suits you.
• Remove the onions and cream from the heat. Top them with seasoned breadcrumbs and one-half cup grated pecorino romano cheese.
• Place the onion gratin in an oven preheated to 425 degrees Fahrenheit and bake for twenty to twenty-five minutes or until the season breadcrumbs and cheese form a nice golden crust and the cream begins to bubble.
• All the onion gratin to rest for about five minutes before serving.

ONIONS AU GRATIN

Steps:

• Cut onions into 1/2-in. slices; saute in butter until tender. Place in a greased 8-in. square baking dish. , In a small bowl, stir the flour, broth, cream, salt and pepper until smooth; pour over onions. Sprinkle with cheeses. , Bake, uncovered, at 350° for 25-30 minutes or until cheese is golden brown and mixture is bubbly.

ONION GRATIN

Steps:

• Spread the onion slices out in a baking dish and drizzle them with olive oil.
• Season with salt and pepper and sprinkle with the thyme.
• Bake in a preheated 375F/190C oven for 15 minutes.
• Meanwhile heat the heavy cream and wine in a sauce pan until it starts to bubble on the edges.
• Spoon the cream over the onions.
• Cover in foil and bake for another 25 minutes.
• Remove the foil and sprinkle the cheese on top.
• Increase the temperature to 450F/230C and bake until golden brown, about 5 minutes.

ONION GRATIN

Steps:

• In a large size heavy skillet melt the butter and cook the onions over medium heat until soft, between 15 and 20 minutes, stirring frequently with a wooden spoon. You do NOT want the onions to be crunchy later.
• Add flour, stirring, and cook about 1 minute.
• Gradually stir in milk and cook 4 minutes; add cream, salt, and pepper.
• Remove skillet from stove top and set aside to cool slightly.
• Preheat oven to 400*F.
• When oven is pre-heated, taste sauce and adjust with more salt and pepper to suit your taste preferences (I like to add quite a bit more pepper).
• After taste adjustment, add 1 beaten egg to the cooled onion mixture and whisk thoroughly to combine.
• Pour the onion sauce into a lightly sprayed pie dish.
• Cover with layer of egg slices and sprinkle with cheese.
• Bake until lightly browned, about 15 minutes-depends upon your oven.
• Top with bacon crumbles.
• Allow to set for 5 minutes so that it will set up and be easier to plate.

THE BEST ONION GRATIN

Steps:

• Preheat oven to 400°F.
• Break the onion quarters apart to give you little "petals".
• Place these in an A4 sized dish or earthenware oven dish.
• Drizzle with olive oil, add salt and pepper, and toss in the thyme and garlic.
• Mix well, add white wine and cover tightly with two layers of tinfoil.
• Bake for 45 minutes, then remove tinfoil, and put back in oven for 15 minutes until slightly golden.
• Stir in creme fraiche (or sour cream) and sprinkle with cheeses.
• Turn oven down to 350F and put back in oven until cheese is golden and melted, about 15 minutes.
• You can eat right away, or cool it down and flash it under the grill when the guests arrive.
• Enjoy!

CREAMED ONION GRATIN

Steps:

• Preheat the oven to 375 degrees. Lightly grease a gratin dish or medium casserole.
• Cut off the root and tip of the onions. Slice in half length-wise and peel. Lay the cut-side of the onion down and slice length-wise into thick wedges.
• In a Dutch oven or heavy pot, melt two tablespoons of butter over medium heat. Add the onions and cook, stirring occasionally, until soft and caramelized, about 40 minutes. Add the sherry and simmer until it evaporates. Remove the onions from the pan and pour through a fine mesh sieve. Let them drain while making the bechamel sauce. (Draining the onions prevents a runny gratin because the onions will continue to release more liquid in the oven.)
• In the same Dutch oven, melt 3 tablespoons of butter over medium heat. Stir in the flour and cook for one minute. Add the scalded milk and cook, whisking constantly, until the sauce is very thick. Remove from the heat. Fold in the Gruyere and stir until completely melted. Season with salt and pepper, to taste. Add the onions to the cheese sauce and toss to thoroughly coat. Pour the onion mixture into the gratin dish.
• Melt the remaining tablespoon of butter and toss with the panko crumbs. Sprinkle over the top of the onions and bake until bubbly and golden brown, about 30 minutes. Serve warm.

ONION SOUP GRATIN

Steps:

• In a large heavy pot, melt the butter over medium heat. Stir in the leeks, onions and shallots and toss to coat with the butter. Cook onions until they begin to soften. Cover and continue to stir occasionally. When the onions begin to turn golden, turn up the heat to medium high and add the pinch of sugar and nutmeg. Continue to cook until onions turn a rich golden brown. Season onions with salt and pepper. Add red wine and bring to a simmer. Cook for 3-5 minutes. Pour in warm stock and bring to a simmer. Preheat oven to 400 degrees. Ladle soup into ovenproof bowls and place bowls on baking sheet. Top each bowl with slice of bread and sprinkle with cheese. Bake for 15 minutes or until bubbly.

ONION GRATIN

Steps:

• Bring a pot of water to a boil and add salt. Preheat the oven to 400°F.
• Drop the onions into the water and leave them there for a minute. Peel them, then put them in a buttered ovenproof dish large enough to hold them in one layer. Sprinkle them with salt, pepper, and a little nutmeg, then pour the cream over all. Bake until the top is brown and the onions are soft, about 30 minutes.

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.

FOUR-ONION GRATIN

Steps:

• Melt butter in heavy large skillet over medium heat. Add leeks, large onions, shallots and garlic and sauté until all are tender, about 20 minutes. Add baby onions and cook 10 minutes longer, stirring occasionally. Mix in 2 cups whipping cream. Boil until cream is thickened to sauce consistency, about 10 minutes. Transfer vegetable-cream mixture to 6-cup shallow baking dish. (Can be prepared 1 day ahead. Cover and refrigerate. Return mixture to room temperature before continuing.)
• Preheat oven to 425°F Sprinkle breadcrumbs over onion mixture. Bake until breadcrumbs are golden brown and onion mixture bubbles, about 20 minutes. Sprinkle with parsley.

CARROTS AND ONIONS AU GRATIN

Steps:

• Preheat oven to 350 degrees F (175 degrees C).
• Place carrots and onions in a pot with enough lightly salted water to cover, and bring to a boil. Cook 5 minutes, or until tender but firm. Drain, and spread 1/2 the carrots and onions in a baking dish. Cover with 3/4 cup cheese, layer with remaining carrots and onions, and top with remaining cheese.
• In a saucepan, melt 3 tablespoons butter and mix in flour until smooth. Gradually stir in milk until thickened, and season with salt and pepper. Pour over the carrots, onions, and cheese in the baking dish.
• Melt 1 tablespoon butter in a small pot, and mix in bread crumbs. Sprinkle evenly in the baking dish.
• Bake 20 minutes in the preheated oven, or until bubbly and lightly browned.

FRENCH ONION SOUP GRATINEE

Steps:

• Melt butter in a large pot over medium-high heat. Stir in salt, red onions and sweet onions. Cook 35 minutes, stirring frequently, until onions are caramelized and almost syrupy.
• Mix chicken broth, beef broth, red wine and Worcestershire sauce into pot. Bundle the parsley, thyme, and bay leaf with twine and place in pot. Simmer over medium heat for 20 minutes, stirring occasionally. Remove and discard the herbs. Reduce the heat to low, mix in vinegar and season with salt and pepper. Cover and keep over low heat to stay hot while you prepare the bread.
• Preheat oven broiler. Arrange bread slices on a baking sheet and broil 3 minutes, turning once, until well toasted on both sides. Remove from heat; do not turn off broiler.
• Arrange 4 large oven safe bowls or crocks on a rimmed baking sheet. Fill each bowl 2/3 full with hot soup. Top each bowl with 1 slice toasted bread, 2 slice Gruyere cheese and 1/4 of the Asiago or mozzarella cheese. Sprinkle a little bit of paprika over the top of each one.
• Broil 5 minutes, or until bubbly and golden brown. As it softens, the cheese will cascade over the sides of the crock and form a beautifully melted crusty seal. Serve immediately!

ONION-PARMESAN GRATIN

Steps:

• Slice the onions in half lengthwise. Place, cut side down, on a cutting board and slice crosswise into very thin slices, and set aside.
• In a large, nonstick skillet, combine the butter, cloves, onions, thyme and salt. Cover and cook over very low heat until the onions are very soft, about 10 minutes. Taste and adjust the seasoning.
• Transfer the onion mixture to a gratin dish and smooth it with the back of a spoon. The recipe can be prepared several hours in advance up to this point. Cover and store at room temperature.
• Preheat the broiler. In a small bowl, combine the egg yolks and cream and whisk together well. Stir in the cheese. Pour the mixture over the onions in the baking dish. Place the baking dish under the broiler about 2 inches from the heat. Broil until the top is sizzling and golden, about 1 to 2 minutes. Serve immediately as a vegetable course or as an accompaniment to meat dishes.