For the dumplings filled with chocolate-banana cream, roll up the puff pastry and cut it three times lengthwise and four times widthwise.
Spread a teaspoon of Brunch chocolate cream on each of the 12 rectangles created, and place a slice of banana about 1 cm.
Finally, place a teaspoon of brunch on top of the banana and close the puff pastry tightly at the top like a sack.
Brush with a beaten egg and bake in a preheated oven at 180 degrees for 20 minutes.
Take out and before serving sprinkle the pastries filled with chocolate-banana cream with powdered sugar.