Perogies

Amazingly gooood for my first try!!!
Recipe (make 4dozen):
Dough:
4cups flour
1/4tsp salt
1egg
1cup 1%plain yogurt
1/2cup water
Filling:
Cooked potato
Butter
Cheddar cheese
1) mix together flour and salt in a large bowl, create a well in the center. Add in egg, yogurt and water. Use a wooden to stir until everything comes together.
2) Turn out onto a floured working surface, knead the dough by hand until it is smooth and does not stick to your hand.
3) Roll it out, use a cookie cutter to cut out circles. Wrap in filling and fold in half, use a fork to seal the edges.
4) cook them in a pot of boiling salt water for around 5mins.
5) serve with sauté onions and sour cream.