Impossible Cheeseburger Pie
["1 lb. ground beef", "1 1/2 c. chopped onion", "1/2 tsp. salt", "1/4 tsp. pepper", "1 1/2 c. milk", "3 eggs", "3/4 c. buttermilk baking mix", "2 tomatoes, sliced", "1 c. shredded Cheddar cheese"]
["Heat oven to 400\u00b0.", "Grease pie plate.", "Cook and stir ground beef and onion over medium heat until beef is brown; drain.", "Stir in salt and pepper.", "Spread in pie plate.", "Beat eggs, milk and baking mix until smooth, 15 seconds in blender on high or 1 minute with hand beater.", "Pour into plate.", "Bake 25 minutes.", "Top with tomatoes, sprinkle with cheese.", "Bake until knife inserted in center comes out clean, 5 to 8 minutes longer.", "Cool 5 minutes. Makes 6 servings."]
["ground beef", "onion", "salt", "pepper", "milk", "eggs", "buttermilk baking mix", "tomatoes", "Cheddar cheese"]