Whisk the butter & sugar until the sugar melts, add the egg whisk, add the warm milk & the Nutella, warm the Nutella in a polythene bag before you add it to the batter & whisk, add the cocoa powder mix until steady. Add the baking powder & drop of flavor, mix & add the flour gently while mixing.

Pour the mixture in the mug & put in the oven, I baked mine 7mins 💃💃 enjoy. Yummy