Impossible Cheeseburger Pie
["1 lb. ground beef", "1 c. chopped onion", "1/2 tsp. salt", "1/4 tsp. pepper", "1 c. Cheddar cheese, grated", "1 1/2 c. milk", "3/4 c. Bisquick", "3 eggs"]
["Heat oven to 400\u00b0.", "Grease a 10-inch pie plate.", "Cook and stir beef and onion until brown; drain.", "Stir in salt and pepper. Spread beef in pie pan.", "Sprinkle with cheese.", "Beat remaining ingredients until smooth.", "Pour over beef.", "Bake until brown, about 30 minutes.", "Serves 6 to 8."]
["ground beef", "onion", "salt", "pepper", "Cheddar cheese", "milk", "Bisquick", "eggs"]