(Original in German here)
175 g butter, soft
225 g brown sugar
1 sachet vanilla sugar
1 pinch of salt
1 tsp cinnamon
1tsp ground cardamom
½ tsp baking powder
350g rolled oats (I used about 200g porridge oats and 150g coarser ones)
125g raisins (the recipe sais chopped, I left them whole)
Preheat the oven to 180°C and line two baking trays with parchment paper.
In a bowl, beat butter until smooth. Add sugar, vanilla sugar and salt and mix. Add the egg und beat until you have a smooth and pale batter. In another bowl, mix flour, baking powder and spices. Sift to the other batter. Add rolleds oats and raisins and mix well.
With two teaspoons scoop out small balls of the dough (about the size of a walnut) and place onto your baking tray. Flatten a little with your hand. Bake for about 13-17 minutes. DON'T overbake them, mine are rather soft after 13 minutes or so, but they will get pretty firm when cooling down!
I ended up with about 50 cookies. Store them in an airtight container.