mug and add the hazelnut spread. Mix until smooth and well combined.
Add the plain yogurt, flour, and baking powder. Stir thoroughly, making sure to reach the bottom of the mug, until you have a smooth, homogeneous batter.
Microwave at full power for approximately 2 minutes, adjusting the time if necessary according to the wattage of your microwave.
Allow the cake to cool slightly before decorating it with an extra spoonful of hazelnut spread and a sprinkle of chopped hazelnuts.
Serve either microwave mug cake warm for an easy single-serving
