Homemade Chocolate Hazelnut Spread (Nutella)

Preheat the oven to 190° C. Spread the hazelnuts on a baking sheet and roast for 12 to 15 minutes, until fragrant. Or you can roast them even on a pan/skillet. Carefully put the hot hazelnuts in a mason jar. Put the hazelnuts into a food processor or a high-powered blender. Grind the hazelnuts for about 5 minutes until they turn into a creamy hazelnut butter.  Add the sugar or other sweetener, cocoa powder, coconut oil, vanilla, and salt. Blend for another minute until all the ingredients are combined smooth.  Transfer to a pint mason jar. Store in the refrigerator for several weeks.