1 lb. hamburger
1 med. diced onion
3/4 c. Bisquick
3 eggs
1 1/2 c. milk
1 c. shredded cheddar cheese

Brown hamburger and onions in skillet. Drain oil when done and put in pie dish. Sprinkle generously with cheese. Mix all remaining ingredients together and pour over hamburger and cheese mixture. Bake in 400 degree oven for 30 minutes.