Cavatini Pasta Casserole - cooking recipe

Ingredients

1 lb. pasta mixed together (pinwheels, twist shells and small shells)
1 stick pepperoni, sliced
1/2 to 1 lb. sausage (optional)
1 small jar sliced mushrooms
1 onion, chopped
1 c. (8 oz.) pkg. Mozzarella cheese
4 to 5 c. spaghetti or 1 large and 1 small jar Prego

Preparation

Cook pasta and drain.
Stir in remaining ingredients.
Pour in 9 x 13-inch pan.
Bake at 350\u00b0 for 45 minutes, then put cheese on top last 15 minutes.