Try this delicious cake recipe:
Cream the butter (or light butter) with the salt, vanilla sugar, sugar and egg yolks until the sugar is dissolved. Fold in the flour mixed with baking powder briefly, gradually adding the milk as well. The dough has the right consistency when it is hard to remove from the spoon. If it is still too firm, add a little more milk. Grease a baking tray and spread the dough on it. Preheat the oven to 150 °C (convection oven).
Cut the rhubarb and strawberries into pieces (rhubarb in about 1 cm). Whip the egg whites until stiff, gradually add the sugar and a pinch of salt. Later, fold in the fruit and nuts and spread the amount on the dough. Finally, sift the powdered sugar over the top. Put the baking tray in the oven for 60 to 70 minutes. The surface should be golden brown.
Tip: If you like, sprinkle the cake with powdered sugar before serving.