Cheeseburger Bake

1 lb. ground beef
3/4 cup chopped onion
1 can condensed Cheddar cheese soup
1 cup frozen mixed vegetables
1/4 cup milk
2 cup Bisquick baking mix
3/4 cup water
1 cup shredded Cheddar cheese

1. Preheat oven to 400ºF. Generously grease 13x9x2-in baking dish.
2. Brown beef and onion in 10-in. skillet, drain. Stir in soup, vegetables and milk.
3. Stir Bisquick and water in baking dish until moistened; spread evenly. Spread beef mixture over batter and sprinkle with cheese.
4. Bake for 30 minutes.