1 lb. hamburger, browned and drained
Onion or onion salt
1 pkg. frozen noodles, cooked according to pkg. directions
1 c. tomato soup
1 sm. jar Prego spaghetti sauce
1 can sliced mushrooms
1 tsp. oregano
Salt and pepper to taste
1/4 tsp. garlic salt
1 (8 oz.) pkg. grated Mozzarella cheese
1 stick pepperoni, sliced, browned and drained

Put hamburger in bottom of 2 1/2 or 3-quart casserole. Add onion and cooked noodles. Mix together soup, sauce, mushrooms, and spices. Add soup mixture to casserole. Top with cheese and pepperoni. Bake 45 minutes at 350 degrees.