In a large skillet, add the sausage, onion and garlic. Heat on medium heat until onion is translucent and sausage begins to brown, about 5 minutes.
Stir in pepper and heat an additional 3-5 minutes.
Stir in pasta, oregano and 1 cup cheese.
Stir in pasta sauce and stir well.
Top with remaining cheese and place into the preheated oven and bake for 10 minutes or until cheese is melted. Serve immediately.
Notes
NOTE: This recipe calls for COOKED tortellini, so cook your pasta according to the package directions while you begin this process. Most tortellini takes about 4-6 minutes to cook.