Put yellow cheese powder, almond flour, baking powder, erythritol, and salt in a bowl and mix.
Melt the egg and unsalted butter together and mix well.
Divide the dough into appropriate sizes and shape into rounds.
Line a baking pan with parchment paper and place the dough on it.
Bake in a preheated oven at 180°C for 20 to 25 minutes.
Let cool to finish.