Indulge in a homemade version of the popular chocolate-hazelnut spread using your food processor. Roast hazelnuts in the oven until fragrant, then remove the skins by rubbing them with a kitchen towel. Add the hazelnuts, cocoa powder, powdered sugar, vanilla extract, and a pinch of salt to the food processor. Process until smooth and creamy. Enjoy the homemade Nutella on toast, pancakes, or use it as a filling for pastries and cakes.