Preheat oven at 180° C.
1. Beat the butter with the caster sugar, the yolk and add the other ingredients: flour, soda, cognac, almonds.
2. Mould the kourambiedes in small balls and make with your finger a dent in their center.
3. Place in rows on the buttered pan and bake in a medium oven until they brown.
4. While they are hot, sprinkle them once with caster sugar and when they cool off sprinkle them a second time.