Slice up about a quarter pound of ham (from a cooked shank) and break into small pieces.
In a frying pan, melt 1 Tablespoon of Butter or use vegetable oil. Add Ham and keep at medium heat. Fry until slightly black and crispy around the edges or to your liking.
In a separate frying pan, melt a tablespoon of butter or use vegetable oil and add 3 - 4 potato and cheddar pierogies. ( I use store bought frozen pierogies, any brand or homemade will work as well).
Cook pierogies, flipping & stirring occasionally until they are slightly golden brown on both sides.
Cut up pierogies into smaller bits, or until it looks like chunky mashed potatoes.
Slice up 4 or so green onions into small pieces & mix in with the chopped pierogies or use as a top layer - or both, your choice.
Toast hamburger buns in the oven or on a grill to your liking.
Add fried ham on the bottom followed by the pierogies and onions.