Directions:
Cook pasta to al dente.
Cook beef, garlic powder, and oregano with onions.
In a lightly greased 9x13x3 inch pan, pour a small amount of sauce to lightly coat the bottom.
Layer ingredients: 1st layer: 1/3 of pasta, 1/3 remaining sauce, 1 bag mozzarella cheese, 2 tablespoons Parmesan cheese, beef, and onions.
2nd layer: ½ of remaining pasta, ½ remaining sauce, 1bag of mozzarella cheese, 2 tablespoons Parmesan cheese, ham.
3rd layer: remaining pasta, remaining sauce, 1 bag mozzarella cheese, 2 tablespoons Parmesan cheese, all pepperoni.
Bake at 375°F for 40 minutes.
Let sit for 5 minutes before serving.