5 tablespoons butter, melted
2 tablespoons all-purpose flour
2 teaspoons grated onion
1 teaspoon white sugar
1 teaspoon salt (optional)
1/4 teaspoon ground black pepper, or to taste
1 cup sour cream
8 ounces Swiss cheese, grated
2 (15 ounce) cans cut green beans, drained
1 cup cornflakes cereal crumbs
Preheat oven to 400 degrees F (200 degrees C).
In a 3 quart saucepan combine 2 tablespoons melted butter, flour, onion, sugar, salt, pepper, sour cream and 4 ounces of the cheese. Cook over low heat and stir constantly until thickened. Fold in green beans. Pour into a 2 quart casserole dish and sprinkle the rest of the cheese on top.
In a small bowl combine cereal crumbs and melted butter; sprinkle over beans.
Bake in preheated oven for 20 minutes. Makes 7 servings.