Pizza Casserole

This has the taste of pizza and baked zitti. A huge hit at our house! 8 hearty servings @ 426 calories
Instructions:
1 lb whole wheat spiral pasta
1 lb honeysuckle turkey Italian sausage
1 onion (chopped and browned with sausage)
2 (26 ounce) cans spaghetti sauce (Hunt's Roasted Garlic & Onion)
3 ounces chopped cooked ham
6 ounces hormel turkey pepperoni
2 cups grated mozzarella cheese
3 tablespoons grated parmesan cheese
1 teaspoon garlic powder
1 teaspoon dried oregano
5 mushrooms, chopped
1 can sliced olives

Directions:
Cook pasta until al dente'.

Cook sausage, garlic powder and oregano with onions until the juices run clear.
In a lightly greased 9x13x3 inch pan, pour a small amount of sauce to lightly coat bottom.
Layer ingredients in the order listed below.
1st layer-1/3 of the pasta, 1/3 remaining sauce, 1/2 cup of mozzarella cheese, 1 Tablespoon parmesan cheese, sausage and onions.
2nd layer-1/2 of the remaining pasta, 1/2 remaining sauce, 1/2 cup of mozzarella cheese, 1Tablespoon parmesan cheese, ham, mushrooms
3rd layer-all remaining pasta, all remaining sauce, 1 cup of mozzarella cheese, 1 Tablespoons parmesan cheese,all the pepperoni(completely covering the entire top with pepperoni)
Sprinkle olives on top.
Bake at 375°F for 40 minutes.
Let sit for 5 minutes before serving.