Roast the hazelnuts for 8-10 minutes at 200C/ 400 F.
Rub them together in a paper towel or a tea towel to get the skins off. (It’s ok if a few stubborn skins won’t come off.)
Add the nuts to a food processor and blend until the nuts have turned to butter. (if this is not happening easily add the maple syrup to help soften the nuts)
Add all other ingredients and blend until smooth (this may take a few minutes)