Grandma's Pierhogy

2 1/2 c flour
1/2 tsp salt
3/4 c milk
2 tbsp melted butter or oil
1 large egg, slightly beaten

Mix flour & salt, add milk, butter & egg. Mix to form soft dough. Knead about 3 min. Cover & let rest 10-15 min. Roll dough thinly. Cut into 2 1/2-3 inch squares.

Filling:
1 c mashed potatoes
2 tbsp grated cheddar cheese
2 tbsp chopped onion
2 Tbsp butter
salt & pepper