Lightly brown the butter in a saucepan over a low heat. Let cool down completely.
Beat the butter, vanilla sugar and powdered sugar until frothy.
Stir in the amaretto, lemon and orange peel. Mix the flour, cornstarch and baking powder and sift onto the butter mixture. Knead the whole thing quickly into a smooth, compact dough.
Wrap the dough in cling film and let it rest in the refrigerator for 1 hour. Then shape the dough into round balls (about the size of a walnut) and place them on a baking sheet.
Make a well in the middle of the balls and bake in the oven preheated to 180-200 ° C for 10-15 minutes.
Knead the marzipan with the amaretto and add some of the marzipan to the well.
Melt the milk chocolate in a water bath, brush the cookies with it and sprinkle with flaked almonds.