Impossible Cheeseburger Pie

Ingredients:
- 1 lb. ground beef
- 1 1/2 c. chopped onion
- 1 1/2 c. milk
- 3/4 c. Bisquick
- 3 eggs
- 1/2 tsp. salt
- 2 tomatoes, sliced
- 1 c. shredded Cheddar or processed American cheese

Directions:
- Preheat oven to 400°. Grease a 1 1/2 x 10-inch pie plate. Cook and stir beef and onion over medium heat until meat is browned.
- Drain spread in plate.
- Beat milk, baking mix, eggs, salt and pepper until smooth.
- Pour on top of meat in plate.
- Bake 25 minutes.
- Top with tomato, sprinkle with cheese and bake until knife inserted in center comes out clean, 5 to 8 minutes.
- Cool 5 minutes.