Prepare everything necessary. The weight of the banana is indicated in the peeled form, one large ripe banana was used.
Pour cocoa powder into a bowl, break an egg.
10 g cocoa, 1 pc egg
Whisk with a fork or whisk until smooth. Introduce baking powder.
½ tsp baking powder
Break the banana arbitrarily.
100 g banana
Mash with a fork. Try to avoid large chunks. The dough is quite liquid, that's how it should be.
Grease a ceramic mold, here size 10x18 cm, with a drop of oil. Pour the dough. It spreads out evenly by itself. Put in the microwave.
vegetable oil
Cook at maximum power, we have 1000 W, for 3 minutes. Pierce with a skewer and make sure there is no raw dough on it. We recommend making the dessert in a spacious mold so that the layer of dough is thin. This way the brownie will bake faster and not dry out on top. It is very important not to overdo it. The healthy brownie in the microwave is ready.