Preheat oven to 375°F. Grease 9 inch pie plate.

Cook beef over medium heat until done. Drain and set aside.

Cook bacon, onion, garlic and oregano until bacon is done. Stir in tomato sauce, corn and beef.

Bring to a boil. Reduce heat and simmer for 10 minutes, uncovered.

Spread half of potatoes on bottom and up sides of pie plate. Top with beef mixture and remaining potatoes.

Brush with butter and bake for 20 minutes.

Sprinkle cheese over top and bake additional 10 minutes.