Baked Shells - cooking recipe

Ingredients

1 box medium pasta shells, cooked and drained
2 jars spaghetti sauce
1 can mushrooms
1 lb. ground beef, cooked and drained
1 large bag Mozzarella cheese

Preparation

Mix all ingredients (except cheese).
Place in greased casserole pan and cook at 350\u00b0 for 45 minutes.
Put cheese on top and bake until cheese is melted.