Microwave green bell pepper and onion in a microwave-safe bowl at HIGH 2 minutes.
Combine onion mixture, ground beef, and next 4 ingredients. Shape into a loaf. Place in a lightly greased 9- x 5-inch loaf pan.
Bake at 350° for 45 minutes. Remove from oven, and pour off pan juices. Spread half of Meat Loaf Sauce evenly over meat loaf; bake 25 more minutes. Remove from pan, and serve with remaining Meat Loaf Sauce.