Fish Fillets Au Gratin

Grrrrrgh!
Course : Fish
From: HungryMonster.com
Serves: 6
 

Ingredients:

6 tablespoons butter or margarine
1 cup onion -- chopped
1/2 cup celery -- chopped
1/2 cup green pepper -- chopped
6 tablespoons flour -- all-purpose
1 1/2 cups milk
1 1/2 teaspoons salt
1 teaspoon pepper
1/4 teaspoon thyme
1 dash hot sauce
1 pound fish fillets; thawed
1 cup breadcrumbs
1/2 cup Cheddar Cheese
 

Preparation:

Melt butter over low heat in a saucepan; sauté onion, celery, and green pepper until tender. Blend in flour, stirring well. Gradually add milk, stirring constantly. Cook over medium heat, stirring constantly, until smooth and thickened. Add salt, pepper, thyme and hot sauce, blend well. Place fish fillets in a buttered 8" square baking dish; cover with sauce. Combine breadcrumbs and cheese; sprinkle over sauce. Bake at 450F for 20 to 25 minutes or until fish is done.