Preheat the oven to 350F. Line 2 baking sheets with silicone baking mats or parchment paper.
Combine the ground chia seeds and hot water. Let sit for about 5 minute while you measure the rest of the ingredients.
Place the cashew butter, flaxseed, arrowroot powder, applesauce, maple syrup, lemon juice, cinnamon, nutmeg, ginger, salt and baking soda in a bowl. Use a hand mixer to evenly combine. Add the chia seed mixture and mix until totally smooth and incorporated.
Add the carrots, raisins and walnuts and mix to gently combine.
Using a cookie scoop or wet spoon, scoop the cookies out onto the prepared baking sheets. Use wet hands to flatten slightly if desired.
Bake for 15-17 minutes until golden on the edges and bouncy to the touch. Let cool for 2 minutes then transfer to a wire rack to cool completely. Enjoy!