Crumble the marzipan mixture into a bowl. Top with the egg, powdered sugar, margarine, cornstarch, flour, almonds and bitter almond flavor. Mix everything well with a hand mixer on the highest setting for about 2 minutes.
Put 2 teaspoons of dough on a baking sheet lined with baking paper. Place 1 almond on each.
Bake in a preheated oven at 200 degrees for about 12 minutes. Let cool down a little and dust with powdered sugar.