Green Onion Casserole Recipes

Steps:

• Preheat the oven to 475 degrees F.
• Combine the onions, flour, panko and salt in a large mixing bowl and toss to combine. Coat a sheet pan with nonstick cooking spray and evenly spread the onions on the pan. Place the pan on the middle rack of the oven and bake until golden brown, approximately 30 minutes. Toss the onions 2 to 3 times during cooking. Once done, remove from the oven and set aside until ready to use. Turn the oven down to 400 degrees F.
• While the onions are cooking, prepare the beans. Bring a gallon of water and 2 tablespoons of salt to a boil in an 8-quart saucepan. Add the beans and blanch for 5 minutes. Drain in a colander and immediately plunge the beans into a large bowl of ice water to stop the cooking. Drain and set aside.
• Melt the butter in a 12-inch cast iron skillet set over medium-high heat. Add the mushrooms, 1 teaspoon salt and pepper and cook, stirring occasionally, until the mushrooms begin to give up some of their liquid, approximately 4 to 5 minutes. Add the garlic and nutmeg and continue to cook for another 1 to 2 minutes. Sprinkle the flour over the mixture and stir to combine. Cook for 1 minute. Add the broth and simmer for 1 minute. Decrease the heat to medium-low and add the half-and-half. Cook until the mixture thickens, stirring occasionally, approximately 6 to 8 minutes.
• Remove from the heat and stir in 1/4 of the onions and all of the green beans. Top with the remaining onions. Place into the oven and bake until bubbly, approximately 15 minutes. Remove and serve immediately.

Steps:

• Prepare the casserole: Preheat the oven to 350 degrees F. Bring a large pot of salted water to a boil. Add the green beans and pearl onions and cook until the beans are bright green, 2 to 3 minutes. Drain the vegetables, then plunge into an ice bath to stop the cooking. Drain, then remove the skins from the pearl onions.
• Combine the olive oil and butter in a large skillet over medium heat. Add the garlic and shallot and cook, stirring, until the shallot is caramelized, about 5 minutes. Add the bay leaves, then the mushrooms. Stir to combine, then add the thyme and season with salt and pepper. Sprinkle the mixture with the flour to tighten it up. Add the milk and boil 3 minutes to thicken; remove the bay leaves.
• Place the green beans and pearl onions in a 3-quart casserole dish. Pour the "mushroom soup" over the vegetables and toss to make sure they are well coated. Transfer to the oven and bake 30 minutes.
• Make the topping: Heat about 2 inches of vegetable oil in a large pot or Dutch oven until a deep-fry thermometer registers 360 degrees F. Toss the shallots in a bowl with enough flour to lightly coat. Working in batches, fry the shallots until golden brown and crisp, about 3 minutes. Using a slotted spoon, remove to paper towels to drain; season lightly with salt. Scatter over the casserole before serving.

Steps:

• Make the casserole:
• Preheat oven to 425ºF. Line 2 rimmed baking sheets with parchment paper. Arrange mushrooms and 2 thyme sprigs in a single layer on prepared baking sheets. Drizzle with oil; season with 3/4 tsp. salt and 1/2 tsp. pepper. Roast mushrooms, stirring once and rotating pan halfway through, until lightly golden, crisp-tender, and liquid is evaporated (watch carefully as cook time can vary between types of mushrooms), 25-35 minutes. Remove sheets from oven and reduce oven temperature to 375ºF.
• Meanwhile, cook green beans in a large pot of boiling generously salted water until crisp-tender, 3-5 minutes. Drain in a colander and rinse under cold water to stop cooking. Drain well, then layer on a rimmed baking sheet with paper towels and pat dry. Wipe pot dry.
• Melt butter over medium-low heat in same pot. Add onion and garlic and cook, stirring occasionally, until tender, 5-8 minutes. Stir in flour and cook, stirring occasionally, until aroma is mildly nutty, 4-6 minutes. Add 3 Tbsp. cream and stir well to combine. Repeat twice, then stir in remaining cream, broth, bay leaves, and remaining 2 thyme sprigs. Bring to a simmer and cook, stirring occasionally and scraping sides of pot, until sauce is the consistency of slightly thickened cream and coats the back of a wooden spoon, about 20 minutes (do not over-reduce). Discard thyme and bay leaves. Stir in zest, 1/2 tsp. salt, and 1/4 tsp. pepper.
• Arrange beans and mushrooms in 3-qt. baking dish. Pour cream sauce over; stir to evenly coat. Bake casserole until sauce is thickened and bubbling around the edges, about 20 minutes.
• Make the fried onion topping:
• Pour oil into a large wide pot or high-sided skillet to a depth of 1/2". Heat over medium-high until hot but not smoking (about 350°F on a deep-fry thermometer). Line a rimmed baking sheet with paper towels.
• Whisk cornmeal, cornstarch, paprika, coriander, and cumin in a large shallow bowl. Toss onion rings in cornstarch mixture to coat.
• Working in batches, fry onion rings, stirring and turning occasionally, until golden and crisp, 2-3 minutes. Using tongs or a slotted spoon, transfer to prepared sheet to drain. Season with salt and pepper while hot.
• Bake the casserole:
• Arrange beans and mushrooms in a 3-quart baking dish. Pour cream sauce over; stir to evenly coat. Bake at 375ºF until sauce is thickened and bubbling around edges, about 20 minutes.
• Top casserole with fried onions and serve warm.
• Do Ahead
• Onions can be fried 1 day ahead. Let cool. Arrange in a flat layer on a paper towel-lined rimmed baking sheet, cover loosely with foil, and store at room temperature.
• Green beans and mushrooms can be cooked 3 days ahead; keep chilled in separate airtight containers. Let come to room temperature before using.

Steps:

• Peel, quarter, and boil potatoes until barely tender.
• Drain, cool and grate on large side of grater.
• Place in a large bowl.
• Gently mix in all other ingredients, except butter.
• Place mixture into a greased shallow 9x9 pan.
• Top with melted butter.
• Bake at 400 degrees for 30 minutes or until golden.

Steps:

• Preheat oven to 350 degrees and butter a shallow 1 1/2 quart baking dish.
• In a skillet, cook scallions and garlic in butter over moderate heat until scallions soften, about 20 minutes.
• Stir in cream and 1/4 cup Parmesan cheese; transfer to baking dish.
• In a skillet, heat oil over moderately high heat until hot, but not smoking.
• Saute bread crumbs, stirring until golden brown, about three minutes.
• Transfer breadcrumbs to a bowl and cool.
• Add remaining Parmesan cheese and season to taste with salt and pepper.
• Top casserole with breadcrumb mixture.
• Bake, uncovered, in the middle of oven until hot, 15-20 minutes.

Steps:

• Preheat oven to 375 degrees F (190 degrees C). Grease a 9x13 inch casserole dish.
• Heat 2 tablespoons of butter in a large skillet over medium heat. Stir the onions into the pan; cook and stir until very soft and golden brown, about 15 minutes. Stir in sherry vinegar. Transfer to a small bowl, and reserve.
• In the same skillet, melt 2 more tablespoons butter. Whisk in 2 tablespoons flour. Stirring constantly, cook over medium heat until the flour smells like baked pie crust, about 3 minutes. Slowly whisk in milk, about 1/2 cup at a time, then whisk in nutmeg, cayenne pepper, and thyme. Bring to simmer, and cook until thickened, whisking constantly, 3 more minutes. Transfer to a bowl and reserve.
• Melt remaining 2 tablespoons butter in clean skillet; stir in panko until all crumbs are coated; reserve.
• Bring a large saucepan of salted water to a boil over medium heat, and boil beans until bright green and crisp but not raw tasting, 3 to 4 minutes. Drain very well.
• Spoon half of the caramelized onions into the prepared casserole dish; top with green beans. Season with salt and black pepper. Spread reserved white sauce over the green beans; sprinkle with half of the Gruyere cheese. Top with the rest of the onions, and use the back of a spoon to push onions down into sauce and cheese. Top with the buttered panko crumbs, the remaining Gruyere, and Parmesan cheese.
• Bake in the preheated oven until hot throughout and lightly browned, about 30 minutes. Let sit 10 minutes before serving.

Steps:

• Blanch the green beans and pearl onions by placing them into a large pot of rapidly boiling water. Cook them for about 2 minutes, until the green beans have brightened in color. Remove the vegetables from the boiling water with a strainer then plunge into an ice bath to stop the cooking process. Drain them, then remove the skins from the onions and set aside.
• Coat a skillet with olive oil and butter over medium heat. Sweat the garlic and shallot down until they caramelize. Add the bay leaves then the assorted mushrooms. Stir to combine, season with salt, pepper and thyme. Sprinkle the mixture with flour to tighten up. Add the milk and boil for 3 minutes to thicken.
• Place the green beans and pearl onions in a 2-quart casserole dish. Pour the "mushroom soup" over the vegetables. Toss to make sure the vegetables are well coated. Bake in a preheated 350 degree oven for 30 minutes. Top with fried onions and continue to bake for 10 minutes.

Steps:

• Preheat oven to 350°F. and butter a 1 1/2-quart shallow baking dish.
• In a kettle cook scallions and garlic in butter over moderate heat until scallions are softened, about 20 minutes. Stir in cream and 1/4 cup Parmesan and transfer to baking dish.
• In a skillet heat oil over moderately high heat until hot but not smoking and sauté bread crumbs, stirring, until golden brown, about 3 minutes. Transfer bread crumbs to a bowl and cool. Add remaining 1/4 cup Parmesan and season with salt and pepper. Top casserole with bread crumb mixture. Casserole may be prepared up to this point 1 day ahead and chilled, covered. Bring casserole to room temperature before proceeding. Bake casserole, uncovered, in middle of oven until hot, 15 to 20 minutes.