Preheat oven to 350˚F (180˚C) and line a baking sheet with parchment paper.
In a small bowl, mix together the flaxseed meal and water to make the flax egg. Let sit for at least 5 minutes to thicken while you gather the other ingredients.
1 tbsp flaxseed meal + 3 tbsp water
In a large bowl or using a stand mixer, beat together the softened vegan butter and brown sugar until evenly combined.
½ cup vegan butter, ½ cup brown sugar
Beat in the flax egg and vanilla or mix well with a wooden spoon.
1 tsp vanilla extract
Add the remaining ingredients and mix until uniform. If using a stand mixer, you may want to start mixing on low speed.
1 cup all-purpose flour, 1 ½ cups old-fashioned rolled oats, 1 ½ cups unsweetened coconut, ½ tsp baking soda, ¼ tsp salt
Roll dough into balls about 2 tbsp in size and place at least two inches apart on the baking sheet. Flatten dough balls with your hands or the back of a spoon until cookies are about ½ inch in height.
Bake for 10-12 minutes, until bottoms are just starting to turn golden brown.
Remove cookies from the oven and let sit on the baking tray for at least 10 minutes to firm up.