Healthy Chocolate Cake

Separate the egg yolks from the whites.

Add yogurt or kefir, flour, cocoa, baking powder, and sweetener to taste to the yolks, and mix everything well.

Add a pinch of salt to the egg whites and whip until stiff peaks form.

Gently fold the whites into the chocolate mixture in 3 batches, pour the batter into a pan greased with a little olive oil, and bake at 180°C (350°F) for about 40 minutes (you can check doneness with a toothpick).

Let the baked sponge cake cool completely, remove it from the pan, and cut it into 3 layers.

For the cream, mix curd/quark with a sweetener, and slice the kiwi and banana into rounds.

Assemble the cake: layer one, curd cream, kiwi; second layer, curd cream, kiwi; final layer, curd cream, banana.