Impossible Cheeseburger Pie - cooking recipe

Ingredients

1 lb. ground beef
1 1/2 c. chopped onion
1 1/2 c. milk
1 tsp. salt
1/4 tsp. pepper
2 tomatoes, sliced
3/4 c. Bisquick baking mix
2 c. Cheddar cheese
3 eggs

Preparation

Heat oven to 400\u00b0.
Grease a 10-inch pie plate and set aside.