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. Bisquick baking mix
2 tomatoes, sliced
1 c. shredded Cheddar or process American cheese

Heat oven to 400 degrees. Grease pie plate, 10 x 1 1/2 inches. Cook and stir ground beef and onion in 10 inch skillet over medium heat until beef is brown; drain. Stir in salt and pepper. Spread in plate.

Beat milk, eggs and baking mix until smooth, 15 seconds in blender on high or 1 minute with hand blender. 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.