In a large mixing bowl, combine the vanilla whey protein powder, rolled oats, poppy seeds, Truvia, and fresh lemon zest. Mix well.

Pour in the freshly squeezed lemon juice and a small amount of water. Stir vigorously until the ingredients start to stick together.

Check the consistency; adjust with more water if too dry, mixing thoroughly after each addition.

Dampen your hands slightly and shape the mixture into balls about 1 inch in diameter.

Place the formed protein balls in a Tupperware container, keeping them in a single layer.

Seal the container and refrigerate for at least 30 minutes to firm up the protein balls.