This is one of my favorite dishes. It's a tiny bit spicy and full of flavor.
½ lb sausage
1 pkg. pepperoni (to taste)--I like a lot
1 can black olives
½ to 1 chopped onion
1/2 green pepper, chopped
1 can mushrooms, drained well
2-3 cups spaghetti sauce
8 oz. Penne pasta
2 c mozzarella cheese, shredded
Cook pasta. Brown sausage. Mix pasta and sausage with everything EXCEPT cheese. Pour into a 13x9 dish. Add shredded mozzarella cheese on top. Bake at 350 degrees until cheese on top is melted and just a tiny bit brown and everything is bubbling hot. If cheese is browning before the casserole is really hot cover it loosely with foil.