Preheat the oven at 200 degrees Celsius.
Melt the butter in a casserole. When it is almost melted take away the casserole from the stow and let the let the rest of the butter melt.
Cover a baking form approx. 20 x 30 cm with a baking paper.
In a bowl mix together the oatmeal, sugar, vanilla sugar, baking powder and flour. Add the melted butter and syrup and mix well.
Place the batter in the baking form and mash it out evenly in the form to a compact paste.
Place the baking form in the lower part of the oven for 10 minutes.
Take out the cake from the oven and cut the nougat in thin slices and place it on the cake and let it melt. Brush out the melted nougat evenly on the cake and let it cool down.
When the cake has cooled down put in the fridge for 20 minutes and then cut it in squares before serving.