Corned Beef Bake

nonstick cooking spray 1 1/2 cups dry elbow macaroni , uncooked 4 cups coarsely shredded cabbage 2 cups chopped leftover corned beef 1 small onion , chopped[...]

5 large baking potatoes , peeled, and cut into cubes 1/3 cup sour cream (low-fat is okay) 1/4 cup milk (1% is okay) salt and pepper 2 tablespoons oil 5 cups[...]