IMPOSSIBLE CHEESEBURGER PIE

1 pound ground beef
1 1/2 cups chopped onion
1/2 teaspoon salt
1/4 teaspoon pepper
1 1/2 cups milk
3 eggs
3/4 cup Bisquick baking mix
2 tomatoes, sliced
1 cup shredded cheddar or process American cheese (4 ounces)

Heat oven to 400 degrees F. Grease pie plate, 10x1 1/2 inches, or square baking dish, 8x8x2 inches, or six (10 ounce) custard cups.

Cook and stir ground beef and onion in 10-inch skillet over medium heat until beef is brown; drain. Stir in salt and pepper. Spread in pie plate.

Beat milk, eggs, and baking mix 15 seconds in blender on high speed, or 1 minute with wire whisk or hand beater or until smooth. Pour into pie plate.

Bake 30 minutes. Top with tomatoes; sprinkle with cheese. Bake 5 to 8 minutes or until knife inserted in center comes out clean. Cool 5 minutes.

Servings: 6
Source: Bisquick Box