filling #1 (roasted yam+gouda):
2lbs yams
2 tbsp butter
3 leeks, mostly whites, chopped
1 tsp salt
1/2lb smoked gouda, grated
1/2 tsp black pepper
-preheat oven to 400. scrub yams and poke with a fork. place on an oiled baking pan, add 1 cup of water to the pan and roast in the oven until very soft and puffy. cool, then peel or mash until smooth.
-while yams are roasting, saute leeks and salt in butter until lightly golden.
-combine leeks, mashed yams, grated cheese and chives. season with salt and pepper. refrigerate until ready to use. can be made ahead of time.
filling #2 (potato+swiss):
2lbs potatoes
1/2 tsp salt
1/2lb swiss cheese, grated
1/2 tsp black pepper
1/4 cup minced chives
-boil potatoes until soft, then mash. combine all ingredients. refrigerate until ready to use. can be made ahead of time.
dough:
4 cups flour
3/4 tsp salt
4 egg yolks
1 cup boiling water
2 tbsp vegetable oil
-mix the flour and salt in a large bowl. add remaining ingredients and mix until a smooth dough forms. cover and let rest at room temperature for 30 min.
-divide into quarters and roll out until about 1/8" thick or less. use a glass with a 3" diameter to cut dough into rounds. fill with a good teaspoonful of filling and press edges firmly to seal.
-boil pierogis until they begin to rise to the surface of the water, about 5 minutes. remove with a slotted spoon, drain, and toss with melted butter.
-this recipe makes lots and lots of pierogis, our freezer is filled with pierogis so i can look forward to a winter full of pierogis which makes it worth all the hand rolling and filling and folding that this recipe entails. to freeze, line uncooked pierogi on parchment paper on a baking sheet and freeze until solid. then store in an airtight container.