In a large mixing bowl, stir together the rolled oats, poppy seeds, lemon zest, and sea salt.
Add the cashew butter, honey, lemon juice, and vanilla extract to the dry ingredients.
Mix thoroughly using a stiff spatula until the dough is cohesive and the oats are evenly coated.
Scoop approximately 1 tablespoon of the mixture at a time and roll between palms to form 12 uniform spheres.
Place the energy bites on a parchment-lined tray.
Refrigerate for at least 30 minutes to allow the oats to hydrate and the bites to firm up.