I got this recipe from Debbie many moons ago and it is really great and economical.
2 pounds Ground Beef, cooked and drained
2 cans (21 oz) spagetti sauce
2 cans (8 oz) tomato sauce
1 can mushrooms
3 tsp Italian Seasoning
16 ounce rotini pasta, cooked
1/2 cup milk
12- 16 ounces mozzarella cheese
Mix meat, sauce, mushrooms with liquid and seasonings. Combine cooked rotini and milk in seperate dish.
In greased 9 by 13 pan layer half rotini, meat sauce, cheese and repeat till pan is filled. Top with pepperoni. Bake 350 for thirty minutes or till heated through and bubbly. Garnish with cherry tomatoes if desired.