1 lb. ground beef
1 1/2 c. chopped onion
1/2 tsp. salt
1/4 tsp. pepper
1 c. shredded cheddar cheese (about 4 oz.)
1 1/2 c. milk
3/4 c. Bisquick mix
3 eggs

Heat oven to 400 degrees. Lightly grease pie plate 10 x 1 1/2 inches. Cook ground beef and onion until beef is brown. Drain. Stir in salt and pepper. Spread in pie plate. Sprinkle with cheese. Beat in remaining ingredients until smooth. Pour into pie plate. Bake until golden brown and knife inserted comes out clean (about 30 minutes). Let stand 5 minutes before cutting. Refrigerate remaining pie.