Mix all of the ingredients. Start with 2 tablespoons lemon juice, and add by the teaspoon as necessary to get it to mix as a dough. Use your hands to get it all fully combined.
Break the dough into 8 pieces, and roll into balls.
Enjoy! Store leftovers in an air-tight container in the refrigerator.
Notes
If you only have whey protein on hand, you'll need more coconut flour to thicken the dough.I would not substitute other flours for the coconut flour. If you need a sub, I'd use casein protein powder, as that would thicken the dough similarly.You can substitute the erythritol with your favorite sweetener, of course! If you use a liquid sweetener, you may need less coconut oil or more coconut flour.Both Quest and PEScience make whey/casein blends in a variety of flavors. Omitting the lemon-specific ingredients (lemon juice and lemon zest), you could use this recipe for any flavor protein balls.Replace the poppy seeds with mini chocolate chips, chopped nuts, or unsweetened coconut shreds!