The famous dessert that drives the world crazy! With no oven, just 1 egg! ready in 5 minutes

ingredients :

3 large bananas
1 tbsp of butter (20g)
1 tbsp of sugar (15g)
1 egg
a pinch of salt
1/4 cup of sugar (50g)
8g of vanilla sugar
1/4 cup of vegetable oil (50ml)
1/2 cup of milk (100ml)
1 cup of all purpose flour (120g)
3 tbsp of cocoa powder (20g)
8g of baking powder
1 tsp of vinegar (5ml)