For the Double Chocolate Chip Cookies, preheat the oven to 180 degrees and line 2 baking sheets with baking paper. Beat the butter, sugar, vanilla sugar until creamy and gradually add the eggs.
Mix everything well. In a bowl, mix flour, cocoa, baking powder and salt and add to butter mixture and mix to a dough.
Using 2 teaspoons, place dough patties on prepared baking sheet and bake cookies for about 10 minutes.