01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt until well blended.
03 - In a large bowl, beat together melted coconut oil and coconut sugar until combined. Add plant milk and vanilla; mix until smooth.
04 - Gradually add the dry mixture to the wet ingredients. Stir until just combined. Fold in the vegan chocolate chips.
05 - Scoop tablespoon-sized portions of dough onto the prepared baking sheets, spacing them about 2 inches apart. Bake for 10–12 minutes, until edges are set but centers are soft. Let cookies cool on the sheet for 5 minutes, then transfer to a wire rack to cool completely.
06 - In a medium bowl, beat together powdered sugar, vegan butter, cocoa powder, vanilla, salt, and 2 tbsp plant milk. Add more milk as needed for a smooth, spreadable consistency.
07 - Once cookies are fully cooled, spread or pipe frosting over the tops. Let set for 15 minutes before serving.