Serve it tonight: Crumble sausage into a greased slow cooker. Add next 5 ingredients. Stir to combine. Cover; cook on low 4-5 hours. Stir in pasta; cover and cook an additional 30 minutes. Stir, top with cheese and cover. Cook an additional 15 minutes or until pasta is tender and cheese is melted. Salt and pepper to taste.
Freezer it for later: Combine first 5 ingredients in a gallon resealable freezer bag. Put pasta in a gallon resealable freezer bag. Put cheese in a quart resealable freezer bag. Put all bags in a gallon resealable freezer bag. Seal well, label and freeze. Thaw completely. Combine casserole mixture with water and prepare as directed above.
Serve with a garden salad.