Cook pasta in boiling water.
Drain.
Cook sausage, garlic powder and oregano with onions until done.
Mix in pimento cheese and set aside.
In a large lightly greased casserole dish pour a small amount of tomato and basil sauce to coat the bottom of the dish, layer ingredients as follows:
1st layer - ⅓ of the pasta, ⅓ remaining sauce, 8 ounces of mozzarella cheese, 2 Tbsp. parmesan cheese, sausage and pimento cheese mixture.
2nd Layer - ½ of remaining pasta, ½ remaining sauce, 8 ounces mozzarella, 2 Tbsp. parmesan cheese, 8 ounces of pepperoni.
3rd Layer - Remaining pasta, remaining sauce, 8 ounces mozzarella cheese, 2 Tbsp. parmesan cheese, ½lb. pepperoni (completely cover the top with pepperoni).
Bake at 375℉ for 40 minutes.
Let it set for a few minutes after coming out the oven & then enjoy!!!