2 pkgs. frozen chopped onions
3 c. Bisquick
3 eggs
2 c. milk
1/2 (8 oz.) pkg. shredded sharp cheddar cheese (reserve balance for topping)

Mix Bisquick, eggs, milk and cheese with wooden spoon or mixer. Saute onions until transparent. Drain and add to other ingredients. Mix thoroughly. Pour into 9 x 13 inch pan, topping with 4 tablespoons butter and remainder of cheese. Sprinkle with poppy seeds, optional. Bake at 350 degrees for 35 to 40 minutes or until brown and bubbly on top.