Separate egg into egg white and egg yolk. Keep egg white.
Mix flour, baking powder, sugar, vanilla sugar, softened butter (cut into pieces), egg white and nuts thorougly and knead to a firm cookie dough
Wrap dough ball into plastic foil and refrigerate for 30 minutes.
Pre-heat oven to 350 degree F.
Roll out dough to about 1/4 in. thickness. Use stencils to cut out stars of various sizes.
Spray cookie sheet with non-stick oil, place star-shaped cookies onto sheet and bake cookie stars for 10-15 minutes until golden brown. Remove from oven and let cool.
Heat wine jelly until warm. Brush semi-liquid wine jelly onto half of the cut out stars. Cover with another star of similar size. Powder with confectionery sugar. Serve.