01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, baking powder, and salt.
03 - In a large bowl, stir together melted coconut oil and brown sugar until smooth. Add plant milk and vanilla extract, mixing until fully combined.
04 - Gradually mix the dry ingredients into the wet ingredients until just combined.
05 - Fold in toasted hazelnuts and chocolate chips until evenly distributed.
06 - Scoop tablespoon-sized portions of dough onto prepared baking sheets, spacing approximately 2 inches apart.
07 - Bake for 10 to 12 minutes, or until golden at the edges and soft in the center.
08 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
09 - Warm the vegan chocolate hazelnut spread with plant milk until smooth and pourable. Drizzle over cooled cookies and allow to set before serving.