Preheat & Prepare:
Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper.
Melt & Mix Butter and Sugar:
In a large bowl, melt butter and mix in brown sugar. Let it sit for 5 minutes to dissolve.
Add Wet Ingredients:
Whisk in the egg, extra yolk, and vanilla extract until smooth.
Combine Dry Ingredients:
In another bowl, whisk together flour, cocoa powder, baking soda, and salt. Gradually stir into the wet mixture.
Fold in Mix-Ins:
Gently fold in shredded coconut, chopped pecans, and chocolate chunks until evenly distributed.
Scoop & Bake:
Scoop 1.5 tablespoon portions onto the prepared baking sheet. Bake for 8-10 minutes, until edges are set but centers are soft.
Cool & Serve:
Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack. Enjoy warm or store for later!