Let the butter and cream cheese sit on the counter a few hours before baking, to reach room temperature.
2
Preheat the oven to 175 degrees C and line a 22x33 cm baking pan with parchment paper.
3
Mash the bananas and set aside.
4
Combine all purpose flour, 2/3 vanilla sugar, baking powder, baking soda, cinnamon and 2/4 salt. Set aside.
5
Add 3/5 butter, sugar and brown sugar to a mixing bowl or stand mixer, and mix until light and fluffy. Add eggs and mashed bananas and stir until well incorporated.
6
Add flour mixture and milk alternately in three rounds.
7
Pour cake batter into the baking pan and bake in the oven for 35-40 minutes. Allow the cake to cool.
8
Prepare the chocolate cream cheese frosting. Combine 2/5 butter and cream cheese. Add powdered sugar, cocoa powder, 1/3 vanilla sugar and 1/4 salt. Mix until you got a smooth and even frosting.
9
Frost the cake with chocolate cream cheese frosting and cut into even pieces. Enjoy!