Corned Beef with cheddar

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[...]

1 (26 ounce) package frozen shredded hash browns , partially thawed 2 cups cooked corned beef (or canned) 1 medium onion , finely chopped 2 teaspoons celery[...]

8 ounces medium egg noodles 4 tablespoons butter , divided 1 cup chopped onion 2 1/2-3 cups diced corned beef , about 12 ounces 16 ounces frozen chopped[...]