1 lb. cooked ground beef
1 1/2 c. chopped onion
1/2 tsp. salt
1/4 tsp. pepper
1 c. shredded cheese
1 1/2 c. milk
3/4 c. Bisquick
3 eggs

Mix all the ingredients together and pour in a 9 x 11 baking pan (sprayed with nonstick oil). Bake at 400 degrees 30 to 40 minutes.