Preheat oven to 350°. Cook noodles according to package directions until al dente; drain. In a large skillet, cook the beef, onion and green pepper over medium-high heat for 10-12 minutes or until meat is no longer pink; drain. Stir in the noodles, soup, cheese, water and chili sauce. Transfer to 2 greased 8-in. square baking dishes., Toss bread crumbs and butter; sprinkle over casseroles. Bake, uncovered, 35-40 minutes or until bubbly and golden brown.