Add 1 cup of hazelnuts into a food processor and blitz until chopped into tiny pieces.
Next, add the cacao powder, agave syrup, vanilla extract, sea salt and chocolate. Pulse until all the ingredients start to stick together. If the mixture is too dry, add 1-2 teaspoon of water.
Roll the mixture into bite-size balls and insert one hazelnut into the centre of each ball.
Serve straight away or store in the fridge for later.