Preheat the oven to 175 °C top/bottom heat. Mix the sugar, myAROMA vanilla, oil and egg until creamy, then stir in the quark.
Mix flour with baking powder and oat flakes and fold into the dough. Peel the bananas, mash them with a fork, mix with myAROMA banana and add them to the dough together with the raisins and mix well.
Divide the dough evenly into a greased muffin tin or one lined with paper cases and bake in the preheated oven for about 25 minutes.