Preheat oven to 500 degrees. Clean scallops under running water to remove ... butter chunks. Place cheese on top. Sprinkle enough croutons ... Uncover for 5 minutes.
Saute onion in 1 tablespoon ... until thickened. Add cheese, stirring until melted. Stir ... casserole. Bake at 350 degrees for 30 minutes. 8 servings.