FRENCH ONION GREEN BEAN CASSEROLE RECIPES

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:

• How to Make Green Bean Casserole:Preheat oven to 350°F. Mix cream of mushroom soup, milk and pepper in 1 1/2-quart baking dish. Stir in green beans and 2/3 cup Crispy Fried Onions.
• Bake 30 minutes or until hot. Stir.
• Top with remaining 2/3 cup onions. Bake 5 minutes longer or until onions are golden brown.
• Test Kitchen Tips:• For a kick of spice, double the black pepper in this green bean casserole recipe to 1/4 teaspoon and prepare as directed.• To feed a crowd, double the recipe and prepare in a 13x9-inch baking dish. Use an entire 6-ounce container of Crispy Fried Onions, reserving 1 1/3 cup for the topping. Increase cooking time to 40 minutes or until heated through.• If using fresh or frozen green beans, make sure to cook them first! Blanch fresh green beans until tender, or steam frozen beans as directed on package.