All American Hamburger
["1 lb. hamburger", "1 medium onion, minced (1/2 c.)", "1 egg", "1/4 c. fine dry bread crumbs", "1 tsp. salt", "1/4 tsp. pepper", "2 Tbsp. ketchup", "1 tsp. mustard", "1/2 tsp. Worcestershire sauce"]
["Mix all ingredients together and saute hamburger in 2 tablespoons butter."]
["hamburger", "onion", "egg", "bread crumbs", "salt", "pepper", "ketchup", "mustard", "Worcestershire sauce"]