Impossible Cheeseburger Pie
["1 lb. hamburger", "1 medium onion", "1/2 tsp. salt", "1/4 tsp. pepper", "1 1/2 c. milk", "3/4 c. Bisquick", "3 eggs", "2 tomatoes", "1 c. cheese, shredded"]
["Brown meat and onions.", "Stir in salt and pepper; drain; spread in greased baking dish.", "Beat milk, Bisquick and eggs until smooth.", "Pour over meat and onions.", "Bake for 25 minutes.", "Top with tomatoes.", "Sprinkle with cheese. Bake until knife inserted in center comes out clean.", "Bake at 400\u00b0."]
["hamburger", "onion", "salt", "pepper", "milk", "Bisquick", "eggs", "tomatoes", "cheese"]