While the cake is baking. Prepare the frosting. We had a rather fluid frosting since we used sour cream, if you want it to be denser, use cream cheese.
Dense cake frosting:
Mix the powdered sugar with the cream cheese. That’s it.
Fluid cake frosting sauce:
Add the powdered sugar to the sour cream. Melt 100gr butter and add to the mixture. Put in the fridge until you are ready to frost the cake.