Baked Mushrooms - cooking recipe

Ingredients

3 lbs small fresh mushrooms
1 small onion, chopped
1/2 cup butter or 1/2 cup margarine, divided
1/2 cup all-purpose flour
3/4 teaspoon salt
1/4 teaspoon garlic powder
1/8 teaspoon pepper
2 1/2 cups chicken broth
1 (8 ounce) cup sour cream
1 tablespoon tomato sauce or 1 tablespoon ketchup

Preparation

In a skillet, saute mushrooms and onion in 1/4 cup butter for 5 minutes.
Transfer to an ungreased 2 quart baking dish.
In the same skillet, melt the remaining butter.
Stir in the flour, salt, garlic powder and pepper until smooth.
Gradually stir in chicken broth; bring to a boil.
Cook and stir for 2 minutes or until thickened.
Stir in the sour cream and tomato sauce or ketchup.
Pour over mushrooms.
Cover and bake at 350 for 30 minutes or until bubbly.