Preheat the oven to 200 C.
Mix the butter, sugar, vanilla sugar and syrup until fluffy. Add the dry ingredients. Roll the mixture into rolls about 1 cm wide. Place them on a baking sheet lined with baking parchment and flatten them slightly.
Glaze with egg and sprinkle nib sugar over the top.
Bake in the oven at for 10-12 minutes.
Remove from the oven and allow to cool.
Cut into diagonal pieces while the rolls are still slightly warm.