Blueberry filled pierogi (aka Vareniki) are light, fluffy and incredibly delicious. Pulled straight from my family’s recipe book, these are just the way my grandma made them.
Combine together flour, yeast, salt and 1/4 cup of sugar.
In small portions add in water. Knead the dough until it's smooth. Cover the dough and let it rise for about an hour.
Divide the dough into equal pieces. If you continue dividing each pierce into halves, they should come out pretty even. Cover the dough with a towel while you are working on each piece.
Either roll out each piece or stretch it out by hand. Place blueberries in the middle and cover with sugar, about 1/3 a teaspoon in each.
Fold it over and pinch to seal. Make sure all holes are sealed well. Leave them on a floured surface or make just one steaming batch at a time.
Bring a pot with water to a boil and place a steamer on the inside. Place vareniki on the steamer and cover it using the lid.
Let them steam for about 7 minutes. To make sure they are fully cooked, break one and confirm that the dough is puffy.
Once done, vareniki should feel light and puffy. It's best to serve them on the first day, although they can be reheated later.