3 cups uncooked short pasta such as penne or rigatoni
1 tablespoon olive oil
1 pound Italian sausage, removed from casing
1/2 cup mushrooms, sliced
1/2 cup green peppers, small dice
4 cups pizza sauce
1 cup Parmesan cheese, shredded
1 cup mozzarella cheese, shredded
1/2 cup pepperoni, thinly sliced
Preheat the oven to 350 degrees Fahrenheit and grease a 9" x 13" casserole dish.
Cook pasta according to the package directions and drain.
While the pasta is cooking, heat olive oil in a large frying pan set over medium heat.
When oil is hot, add sausage, breaking it up as you do. Cook for about 5 minutes, until all sausage is nearly browned.
Add mushrooms and green peppers to the frying pan and stir. Cook for about 5 more minutes.
When pasta and sausage mixture are finished cooking, place them in a large bowl.
Add pizza sauce and Parmesan cheese to the bowl and stir everything together. Pour into prepared casserole dish.
Sprinkle mozzarella cheese evenly over the casserole.
Lay pepperoni on top of the mozzarella cheese.
Place in the preheated oven and bake for 30 minutes, until hot throughout and the cheese on top is bubbling and starting to brown.