FEW PEOPLE KNOW THIS SECRET! JUST BOMB ???? COOK IN 10 MINUTES!

Butter 62 grams
Sunflower oil 40 ml
sugar 75 grams
egg 1 pc
Cornstarch 40 grams
vanilla sugar 1 teaspoon
Flour 180, 200 grams
baking powder 1 teaspoon
chocolate pastry filling

Bake at 180°C for 20 minutes

Good luck my dear friends