Preheat the oven to 375°F and line a baking sheet with parchment paper.
Spread the raw hazelnuts evenly on the baking sheet and bake for 12-15 minutes. Let them cool for 5 minutes before transferring to a clean dish towel.
Wrap the hazelnuts in the towel and rub them together for about 5 minutes to remove the skins.
Add the roasted, skinless hazelnuts to a food processor or blender and blend until you have hazelnut butter, about 10-15 minutes.
Once you have hazelnut butter, add the powdered sugar, cocoa powder, melted coconut oil, vanilla extract, salt, and instant coffee, and blend again.
Pour the mixture into a dish with an airtight lid and enjoy!