Quick Cheeseburger Bake

1 lb. ground beef

3/4 C chopped onion

1 can (10 3/4 oz.) condensed Cheddar cheese soup

1 C frozen mixed vegetables, if desired

1/4 C milk

2 C Bisquick original or reduced fat baking mix

3/4 C water

1 C shredded Cheddar cheese

Heat oven to 400 degrees. Generously grease 13x9x2" baking dish. Cook beef and onion in 10" skillet until beef is brown; drain. Stir in soup, vegetables and milk. Stir baking mix and water in baking dish until moistened. Spread evenly. Spread beef mixture over batter. Sprinkle with cheese. Bake 30 minutes, 8-10 servings.