Whisk dry ingredients together in a mixing bowl. Add softened coconut oil and continue to beat until the oil is well combined.
Add chocolate chunks and walnuts, and mix well. Add coconut milk and vanilla; stir until dough forms into a ball.
Refrigerate the cookie dough for 20 minutes. Meanwhile, line baking tray with parchment paper and preheat oven to 350 degrees F.
Roll dough into balls by hand and place on parchment paper, spaced at least an inch apart.
Gently press each cookie down slightly. Bake for 15-20 minutes until golden on the bottom. Remove from pan and let cool.
Note: Preferred chocolate chips and nuts can be used