Remove the stalks from 12 pieces strawberries, then wash and dry them thoroughly.
Combine 1 ½ cup all-purpose flour, ¼ teaspoon baking powder, and ¼ teaspoon salt in a bowl, whisking to mix. Add 9 ounces Farmers cheese and 1 medium egg.
Mix quickly with a fork, then turn the mixture out onto a floured surface. Work it into a non-sticky dough. Keep a small pile of flour on the side, adding more to the dough if it becomes too sticky.
Form the dough into a roll and cut it into equally sized pieces. Flatten each piece into a thin patty, then place a washed and thoroughly dried strawberry in the center. Wrap the dough around the strawberry and seal it tightly.
Roll the dumpling between your hands to give it a nice round shape, making sure it is about 2 ½ inches (6-7 cm) in diameter. Continue in the same way until all the dough is used up.
Bring a large saucepan of water to a boil. Add a pinch of salt and reduce the heat to about half. Carefully drop the dumplings into the boiling water and cook for 5-6 minutes, depending on their size.
You don't need to flip the dumplings. If they get stuck to the bottom of the saucepan, gently loosen them with a fork so they float to the top.
Using a slotted spoon, remove the cooked dumplings and place them on a plate.
In a bowl, mix 1 cup sour cream and ½ cup powdered sugar. Melt 4 Tablespoons unsalted butter. Arrange the warm dumplings on a plate and top each serving with 2-3 tablespoons of the sour cream mixture. Drizzle with melted butter and serve.