Pizza Casserole - cooking recipe

Ingredients

4 oz. sliced pepperoni
1 medium onion, chopped fine
6 oz. thin spaghetti
1 lb. grated Swiss cheese
1 lb. grated Mozzarella cheese
1 tsp. oregano
2 (8 oz.) cans tomato sauce
4 oz. mushroom pieces

Preparation

Butter 9 x 13-inch casserole dish.
Cook spaghetti 10 minutes and drain.
Spread spaghetti in the casserole dish and cover with tomato sauce.
Spread on 1/2 of Swiss cheese, 1/2 of Mozzarella cheese, all the mushrooms and onion.
Sprinkle with oregano.
Add remaining ingredients in the same order, finishing with pepperoni. Bake 20 to 25 minutes, until bubbly.