Impossible Taco Pie
["1 lb. ground beef", "1/2 c. chopped onion", "1 (1 1/4 oz.) envelope taco seasoning mix", "1 (4 oz.) can chopped green chilies, drained", "2 c. milk", "1 (5.5 oz.) Bisquick", "4 eggs", "2 tomatoes, sliced", "1 c. shredded Cheddar or Monterey Jack cheese"]
["Heat oven to 400\u00b0.", "Lightly grease pan.", "Brown ground beef and onion in skillet; drain.", "Stir in taco mix.", "Pour in pan. Sprinkle with chilies.", "Set aside.", "Beat milk, baking mix and eggs until smooth, 15 seconds in blender or 1 minute with a hand mixer. Pour into a 13 x 9-inch pan.", "Bake 35 minutes.", "Top with tomatoes.", "Sprinkle with cheese.", "Bake until cheese is golden brown and a knife inserted in the center comes out clean, 8 to 10 minutes."]
["ground beef", "onion", "taco", "green chilies", "milk", "Bisquick", "eggs", "tomatoes", "cheese"]