Wash the Medjool dates and pat them dry.

Using a small knife, make a slit down one side of each date and remove the pit.

Place 3 hazelnuts inside each date where the pit was removed and press the date closed firmly.

Add the Nutella to a microwave safe bowl and heat in 2 to 3 intervals of 30 seconds, stirring between each, until smooth and very runny.

Using a fork, dip each stuffed date into the melted Nutella, ensuring it is fully coated.

Place the coated dates onto a plate lined with parchment paper.

Refrigerate until the Nutella coating has set.

Melt the dark chocolate in the microwave in short 30 second intervals until smooth.

Transfer the melted dark chocolate to a piping bag and drizzle over the chilled dates.

Sprinkle with chopped hazelnuts while the chocolate is still wet.

Return to the fridge until fully set before serving.