Easy Make Ahead Green Bean Casserole Recipes

Steps:

• Bring a large pot of salted water to a boil. Add the green beans, and cook until bright green and crisp-tender, about 10 minutes. Drain and shake off any excess moisture; set aside.
• Melt the butter in a medium pot over medium heat. Add the onions, and cook, stirring, until soft, about 8 minutes. Add the mushrooms and a pinch of salt, and continue to cook, stirring, until they are soft and most of their liquid has evaporated, about 10 minutes. Sprinkle the flour over the vegetables, and stir until all the flour has been absorbed, about 1 minute. Add the chicken broth, half-and-half, 3/4 teaspoon salt and several grinds of pepper. Bring to a boil, then reduce to a simmer and cook, stirring, until the sauce thickens and coats the back of a spoon, about 5 minutes. Remove the pot from the heat, add the green beans and stir to coat in the sauce. Transfer the mixture to a 3-quart baking dish.
• Let the casserole cool to room temperature. Wrap well with plastic wrap and foil, label and date, then freeze for up to 2 weeks.
• To serve, preheat the oven to 350 degrees F. Discard the plastic wrap and foil from the frozen casserole. Cover with new foil, and bake until warmed through, about 45 minutes. Uncover, and top with the fried onions. Continue to bake until the casserole is hot and bubbly and the onions have crisped slightly, about 20 minutes more.

Steps:

• Spray a 2 1/2-quart casserole dish with cooking spray. Mince shallots until you have 3 tablespoons; slice remaining shallots into 1/8-inch rounds. Set both aside.
• Bring a large pot of lightly salted water to a boil. Add beans and cook until tender but still crisp, about 4 minutes. Drain, rinse, and pat dry; set aside.
• Melt butter in a saucepan over medium heat. Add mushrooms and cook, stirring frequently, until browned, 5 to 7 minutes. Add minced shallots and cook until softened, 2 to 3 minutes. Stir in 3 tablespoons flour, then slowly add half-and-half, broth, and soy sauce. Bring to a boil while stirring.
• Reduce heat to a simmer and stir until thickened, about 5 minutes. Stir in green beans and season with salt and pepper. Transfer to the prepared casserole dish, cover, and refrigerate 8 hours to overnight, or until ready to bake.
• Preheat the oven to 350 degrees F (175 degrees C).
• Remove casserole from the refrigerator and bake in the preheated oven until heated through and bubbly, about 30 minutes.
• While the casserole is baking, dredge shallot rings in remaining flour until evenly coated.
• Heat oil in a saucepan over medium heat. Lower shallots carefully into the hot oil, working in batches if necessary. Fry until golden brown, 1 to 2 minutes, then drain on paper towels.
• Remove casserole from the oven and top with fried shallots.

Steps:

• Spray a shallow 1 1/2-quart casserole dish with nonstick spray.
• Place beans in a large pot and halfway cover with salted water; bring to a boil. Cook until tender, 4 to 6 minutes. Drain and set aside.
• Melt butter in a skillet over medium heat. Add onion and cook until tender, 5 to 7 minutes. Blend in flour, salt, and pepper. Stir in sour cream, stirring constantly, cooking until smooth and thickened. Mix in cooked beans, then pour into the prepared casserole. Cover and refrigerate until ready to bake.
• Preheat the oven to 350 degrees F (175 degrees C).
• Remove casserole from the refrigerator and sprinkle Cheddar cheese over top.
• Bake in the preheated oven until bubbly, 15 to 20 minutes. Serve warm.