1 lb. ground beef
1 1/2 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 cheddar or American cheese

Heat oven to 400 degrees. Grease pie plate, 10 x 1 1/2 inches. Cook and stir beef and onion over medium heat until beef is brown; drain. Spread in plate. Beat milk, baking mix eggs, salt, and pepper 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, 5-8 minutes. Cool 5 minutes. 6-8 servings.