Combine oatmeal, almonds, cake flour, baking powder, and salt in a bowl.
In another bowl, cream together butter and sugar.
Add the egg to the butter mixture and mix well.
Add the dry ingredients to the wet mixture and mix until combined.
Shape the dough into balls and place them on a baking tray.
Bake in a preheated oven at 180°C for 15 minutes.
Let cool to finish.