1. Place bacon in 3-quart casserole. Cover loosely and microwave on high 4 to 5 minutes or until crisp. Stir in onion, bell pepper, macaroni, soup and water.
2. Cover tightly and microwave 14 to 16 minutes, stirring every 4 minutes, until macaroni is tender. Stir in cheese until melted. Top with bread crumbs.