First, preheat your oven at 180 degrees and line a baking tray with baking paper or a silicone baking mat.
In a large mixing bowl or food processor, mix together the sugar, butter and Nutella.
Then mix in the egg, followed by the flour, baking powder and a pinch of salt until fully combined.
Now mix in the chocolate chips. Note: if you want, you can form into a ball, wrap with clingfilm and leave in the fridge for a couple of hours before continuing the next stage.
Turn the mixture on to a lightly floured surface and go over it with a rolling pin until ¼ inch thick.
Using a cookie cutter of your choice, cut your cookies and place them around 2cm apart on the tray.
Bake for around 8-10 minutes in the middle of the oven until slightly golden. Note, they'll harden once cooled.
Remove from the oven and leave to cool for 10 minutes, then transfer to a cooling rack until set.