Cook pasta in boiling water until al dent é.
Cook sausage, garlic powder and oregano with onions until the juices run clear.
In a lightly greased 9×13×3 inch pan, pour a small amount of sauce to lightly coat bottom.
Layer ingredients in the order listed below.
st layer-1/3 of the pasta, 1/3 remaining sauce, 1 bag of mozzarella cheese, 2 Tablespoons parmesan cheese, sausage and onions.
nd layer-1/2 of the remaining pasta, 1/2 remaining sauce, 1 bag of mozzarella cheese, 2 Tablespoons Parmesan cheese, ham.
rd layer-all remaining pasta, all remaining sauce, 1 bag of mozzarella cheese, 2 Tablespoons Parmesan cheese, all the pepperoni(completely covering the entire top with pepperoni).
Bake at 375°F for 40 minutes.
Let sit for 5 minutes before serving.