01 - Preheat oven to 350°F and line two baking sheets with parchment paper.
02 - Whisk together flour, baking soda, and salt in a large bowl. Stir in chopped hazelnuts.
03 - Combine melted coconut oil, coconut sugar, maple syrup, almond milk, and vanilla extract in a separate bowl until smooth.
04 - Pour wet ingredients into dry ingredients and mix until soft dough forms.
05 - Scoop tablespoon-sized portions onto prepared baking sheets, spacing 2 inches apart.
06 - Press each cookie gently with back of spoon or hand to flatten slightly.
07 - Bake for 10 to 12 minutes until edges are golden. Cool on baking sheet for 5 minutes, then transfer to wire rack.
08 - Melt chocolate chips and hazelnut butter in microwave-safe bowl in 30-second intervals, stirring until smooth.
09 - Drizzle chocolate-hazelnut mixture over cooled cookies. Allow to set before serving.