In a mixing bowl, combine rolled oats, almond butter, and shredded coconut.
Add honey (or maple syrup), ground flaxseed, vanilla extract, and sea salt to the bowl.
Mix all the ingredients together until fully combined; you may need to use your hands for better incorporation.
If using, gently fold in dark chocolate chips.
Scoop about 1 tablespoon of the mixture and roll it into a ball; repeat until all the mixture is used.
Place the energy balls on a tray lined with parchment paper and refrigerate for at least 30 minutes to firm up.
Store the energy balls in an airtight container in the fridge for up to one week.