For the dough, stir the butter or margarine until smooth. Gradually stir in the sugar, vanilla sugar and water and stir until a bond has formed. Gradually stir in the eggs (each egg about ½ minute). Mix flour with baking powder and cocoa, sieve and stir in 2 portions on medium heat. Mix in oatmeal and almonds or nuts, tablespoon at a time, on medium heat. Add the rum.
Put 2 teaspoons of dough on a baking sheet lined with baking paper. Leave enough space between the piles. Flatten the piles with a spoon. Bake in the preheated oven at 180 ° C for about 15 minutes.