Preheat the oven at 175 degrees Celsius.
Melt the margarine together with the saffron in a casserole and let it cool down for 10 minutes.
Mix the eggs and the sugar together so it becomes fluffy and white.
Add the butter, grated almond paste and the milk and stir it all together.
While stirring add the flour, vanilla sugar and the baking powder.
Place a baking paper on a baking sheet approx 30 cm x 40 cm in size.
Pour the batter on the paper and place the cake in the middle of the oven for 15-20 minutes. Take it out an let it cool down.
Before serving the cake cut it in small squares and sprinkle icing sugar on top.