Roast the Hazelnuts: To bring out their full flavor and make them easier to peel, you’ll want to roast the hazelnuts first. It’s as simple as putting it on a baking sheet and roasting for 10 minutes at 350°F (175°C). When you peek in, you’ll immediately smell that delicious hazelnut fragrance and see they’ve gotten golden brown.
Remove the Skins: Once the hazelnuts are roasted, transfer them to a clean kitchen towel and rub them together to remove the skins. You could also use a paper towel or rub them in your hands to remove the skin. Be sure to remove as much of the skin as possible, as this will give the hazelnuts a smoother texture.
Melt the Chocolate, Coconut Oil, and Espresso Powder: In a small saucepan over medium heat, melt together the chocolate, coconut oil, and instant espresso powder. Stir constantly, about 1 – 2 minute, until the mixture is smooth and fully combined. Alternatively, you can melt them together in the microwave, stirring every 30 seconds until smooth.
Mix in the Hazelnuts: Once the chocolate mixture is melted and smooth, add in the hazelnuts and fold until they are evenly coated in chocolate.
Spread it out: Line an 8×8 square baking pan with parchment paper, making sure to leave some overhang on the sides for easy removal later.
Transfer: Pour the chocolate and hazelnut mixture into the prepared pan and use a spatula to spread it out into a single, even layer.
Chill until Hardened: Place the pan in the refrigerator and chill until the chocolate is firm and set, usually about 1 hour.
Cut or Break into Smaller Pieces: Once the chocolate is hardened, use a sharp knife to cut it into small pieces or break it into smaller pieces by hand. Serve and enjoy!