Cream the room-temperature butter until smooth. Add powdered sugar and whip thoroughly. Gradually mix in milk in two additions.

Sift almond flour and add it to the mixture. Use a spatula to combine. Add cake flour and mix until a dough forms. Flatten the dough with your palm repeatedly for a crispier texture.

Wrap the dough in foil and shape it using a kitchen towel roll. Freeze until firm.