1 lb. ground beef
1/2 c. chopped onion
1 (1 1/4 oz.) env. taco seasoning mix
1 (4 oz.) can chopped green chilies, drained
1 1/4 c. milk
3/4 c. Bisquick baking mix
3 eggs
2 tomatoes, sliced
1 c. shredded Monterey Jack or cheddar cheese

Heat oven to 400 degrees. Grease 10" pie plate, 10" x 1 1/2". Cook and stir beef and onion over medium heat until beef is brown; drain. Stir in seasoning mix. Spread in plate, sprinkle with chilies. Beat milk, baking mix and eggs 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 8 to 10 minutes longer or until knife inserted comes out clean. Serve with sour cream, chopped tomatoes and shredded lettuce, if desired. 6 to 8 servings.