Cook sausage. Cut up into bite sized pieces or slices and set aside. Cook pasta according to package; drain and rinse with cold water to stop the cooking process and set aside.
Cut onion and bell peppers into slices ( I like to use one pepper of each color). Put onion and peppers in large pan and cook for about 5 minutes (until tender crisp) on medium heat. Add chopped garlic.
Add sausage, pasta and sauce to vegetable mixture and heat through.