Place hazelnuts on baking tray and cook in the oven for approximately 15 minutes until the hazelnuts are fragrant.
Allow hazelnuts to cool to the point that you can touch them.
Use your hands to rub the skins off the hazelnuts. If you gently take a handful in your hands and rub them together, most of the skins will fall off.
Place skinned hazelnuts, cocoa, powdered sugar, vanilla, oil and salt into a blender and allow the mixture to blend until it is completely smooth. It will take a little bit for the nuts to completely break down so you may need to scrape the sides of your blender a couple of times until your mixture starts to come together.
Remember since this is homemade it will be more grainy that the store bought Nutella.
Recipe by at https://laurasglutenfreekitchen.com/2017/06/homemade-nutella/