Add the rolled oats, ground flaxseed, chia seeds and shredded coconut to a large mixing bowl. Stir to combine.
Add the nut butter, honey and vanilla. Mix thoroughly until all of the dry ingredients are evenly coated.
Fold in the dark chocolate chips.
Refrigerate the mixture for about 30–60 minutes. Chilling makes it easier to roll.
Using a small cookie scoop or your hands, portion the mixture and roll into approximately 1-inch balls.
Store in an airtight container in the refrigerator for up to 1 week or freeze for longer storage.