01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a small bowl, mix ground flaxseed and water. Let sit for 5 minutes until thickened.
03 - In a large mixing bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, nutmeg, and ginger.
04 - In a separate bowl, combine brown sugar and melted coconut oil. Whisk until smooth. Add plant-based milk, vanilla, and the flax egg. Mix well.
05 - Gradually add the wet ingredients to the dry ingredients, stirring until just combined. Avoid overmixing.
06 - Scoop tablespoon-sized amounts of dough and roll into balls. Place on prepared baking sheets, spacing 2 inches apart.
07 - Bake for 10-12 minutes, until cookies are set and just beginning to turn golden.
08 - Cool on the baking sheets for 5 minutes, then transfer to a wire rack.
09 - Once fully cooled, dust generously with powdered sugar.