01 -
Preheat oven to 350°F. Arrange hazelnuts on a baking sheet and toast for 10–12 minutes, stirring halfway for even color. Let cool, then roughly chop. Reserve 1/2 cup for topping.
02 -
In a medium bowl, whisk together all-purpose flour, cocoa powder, baking powder, and salt until thoroughly blended.
03 -
In a large bowl, beat softened butter, granulated sugar, and brown sugar together until light and fluffy, about 2–3 minutes. Add egg and vanilla extract, mixing until fully incorporated.
04 -
Gradually add the dry ingredients to the wet mixture, stirring just until combined. Fold in toasted hazelnuts, leaving aside the reserved portion for the topping.
05 -
Line a baking sheet with parchment paper. Use a tablespoon to scoop dough, roll into balls, and flatten gently into discs. Bake for 10–12 minutes at 350°F, or until set at the edges. Cool completely on a wire rack.
06 -
In a microwave-safe bowl, melt chopped chocolate with coconut oil in 30-second intervals, stirring after each until smooth and glossy.
07 -
Dip each cooled cookie into melted chocolate to coat entirely. Set on a wire rack or parchment-lined sheet. Sprinkle with reserved chopped hazelnuts while chocolate remains wet. Allow chocolate to set at room temperature or refrigerate briefly.