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Cheesy Green Bean Casserole


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Rate this recipe 4.5/5 (6 Votes)


  • 1 1/2 pounds green beans, trimmed and cut into 2-inch pieces
  • 6 tablespoons unsalted butter
  • 1 pkg (10 oz) brown mushrooms, cleaned, trimmed and sliced
  • 1 teaspoon garlic salt
  • 3 tablespoons all-purpose flour
  • 1 1/2 cups milk
  • 1/4 teaspoon black pepper
  • 1 pkg (7 oz) Swiss cheese, shredded
  • 1 container (2.8 oz) French's fried onions
  • 1/4 cup panko bread crumbs


Adapted from


Step 1

Heat oven to 375 degrees. Coat a baking dish with nonstick cooking spray. Bring a large pot of lightly salted water to a boil. Add green beans and cook 4 minutes. Drain, leaving beans in the colander. Return pot to stove. Melt 3 tbsp of the butter in a large nonstick skillet set over medium heat. Add sliced mushrooms and cook 5 minutes, until softened and slightly browned. Season with 1/2 tsp of the garlic salt. Add remaining 3 tbsp butter to pot from green beans. Melt over medium heat and whisk in flour. Cook, whisking, 1 minute. While whisking, add milk. Season with remaining 1/2 tsp garlic salt and the pepper. Bring to a simmer; cook 3 minutes, whisking frequently. Remove from heat and whisk in Swiss cheese. Fold in green beans, mushrooms and 1/3 cup of the fried onions, crushed. Pour into prepared dish. In a small bowl, toss together remaining fried onions and the panko. Sprinkle over casserole and bake at 375 degrees for 25 minutes. To make ahead: Assemble casserole, but do not sprinkle with crumbs until just before baking. Extend bake time by at least 5 minutes to heat through.

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