Pour ⅓ dough into another bowl and incorporate the melted chocolate or powdered chocolate until it is uniform. In the rest of the dough, add the vanilla aroma.
Pour the vanilla dough then the chocolate dough into your molds, then turn them with a knife to obtain a marbled appearance.
Cook the cakes for 40 minutes - 45 min dependent on the molds. And take the knife test before removing. Let it cool in their molds for 15 minutes