Potluck Sausage Pasta Casserole

I seem to be invited to a lot of potlucks lately.....I need a main dish for next week.....I revised one of last years camp recipes and I'm thinking this will be my Potluck Sausage Pasta Casserole. 

POTLUCK SAUSAGE PASTA CASSEROLE

1 lb. rigatoni pasta

1 lb. sausage

2 red/green bell peppers, cut into strips

1 large onion, cut into strips

2 t. granulated garlic 

2 - 26 oz. cans spaghetti sauce

1/4 c. Parmesan cheese

1 c. grated mozzarella cheese

Cook pasta according to package directions; drain.

In a large skillet, saute sausage, peppers, onions, and garlic, over medium-high heat until cooked through and tender, stirring occasionally.  Drain if needed and place in crock pot. Add pasta, spaghetti sauce, and Parmesan cheese; mix well.  Turn crock pot on low for 3 to 4 hours to heat through.  A few minutes before serving, sprinkle  with mozzarella cheese and replace lid until cheese is melted.