In a large bowl, combine the fromage blanc, softened butter, egg yolks, and sugar.
Gradually stir in the flour and baking powder until you have a soft, smooth dough.
Chill the dough:
Wrap the dough in plastic wrap and place it in the refrigerator for 20 minutes to firm up.
To shape the buns:
Preheat the oven to 180°C.
Remove the dough from the refrigerator and shape them into buns of the desired size.
Place them on a baking sheet lined with parchment paper.
Cooking :