Melt the butter and set aside to cool.
Beat the eggs, sugar, salt powder well with the mixer until it doubles in volume, then add the melted butter, milk and mix carefully. Flour mixed with baking powder is put in the rain and mixed lightly. At the end add the washed, cleaned and cut into small cubes and mix lightly with a spoon.
Prepare the muffin tins, line them with paper and fill with dough, leaving enough space for the muffins to grow.
Place the tray in the preheated oven at 180 degrees C, for 25-20 minutes. After cooling, powder with powdered sugar.