Impossible Cheese Burger Pie
["1/2 lb. ground beef", "3/4 c. chopped onion", "1 1/2 c. milk", "3/4 c. Bisquick baking mix", "3 eggs", "1/2 tsp. salt", "1/4 tsp. pepper", "2 tomatoes, sliced", "1 c. shredded cheese"]
["Heat oven to 400\u00b0.", "Grease 10 x 1 1/2-inch pie plate.", "Cook beef and onion over medium heat until brown.", "Drain.", "Spread in pie plate.", "Beat milk, baking mix, eggs, salt and pepper in blender on high until smooth, 15 seconds.", "Pour over meat in pie plate and bake for 25 minutes.", "Top with tomatoes and cheese. Bake until knife in the center of pie comes out clean.", "Serves 5 to 8."]
["ground beef", "onion", "milk", "Bisquick baking mix", "eggs", "salt", "pepper", "tomatoes", "shredded cheese"]