Combine eggs, erythritol, salt, coconut milk, and unsalted butter in a bowl and mix well.
Sift in almond flour, coconut flour, and baking powder, then mix to form a dough.
Divide the dough into 40g portions and shape them into rounds.
Bake in a preheated oven at 180°C for 20 minutes.
Cool on a wire rack.