Mix the flour, brown sugar and sodium bicarbonate in your dough beater.
Add the melted butter and knead for 3 minutes on low speed.
Add the beaten egg and knead 2 minutes on low speed (the dough should be well blended).
Add the whole almonds and knead on low speed for 30 seconds.
Form a sausage of dough. Place it in a suitable food film foil and give it a rectangular shape (or any other form for your cookie).
Put the dough in the freezer for a period of 4 hours.
Cut the frozen dough into thin slices using a slicer. Place them on a baking plate covered with baking paper.
Bake them in a hot oven at 180°C for 10 minutes.
Let them cool completely before you remove them from the baking plate.