1 lb. ground beef
1/2 c. evaporated milk
1/2 c. ketchup
1/3 c. five day bread crumbs
1/2 c. chopped onion
1/2 tsp. dried oregano
3/4 tsp. salt
4 oz. American cheese
1 tsp. Worcestershire sauce

Combine first 7 ingredients. Bake in frozen pie shell for 40 minutes. Toss cheese with Worcestershire sauce, sprinkle on top of pie.