Italian Pasta and sausage

So here's what's in my crockpot right now:

3/4 lb. hot italian sausage links, cut into bite-size pieces (I used mild italian sausage)
1 red pepper, chopped
1/2 onion, chopped
26-oz. jar spaghetti sauce
6-oz. penne pasta, cooked.

Stir together all ingredients except pasta in a slow cooker. Cover and cook on low setting for 7 to 8 hours. At serving time, stir in cooked pasta. Makes 4 servings.