Cheeseburger Pie

1 lb. ground beef

1 large onion (optional)

1/2 tsp. salt

1 c. shredded cheese

1/2 c. Bisquick

1 c. milk

2 eggs

Cook meat and onion in skillet until brown. Put in pie pan and sprinkle with cheese. Stir remaining ingredients in bowl, then pour over cheese and beef. Bake at 400 degrees for 30-35 minutes.

(From Bisquick box)