Add the rolled oats, vanilla protein powder, unsweetened cocoa powder, and chia seeds to a large mixing bowl and stir until all of the dry ingredients are evenly combined.

Add the natural peanut butter, honey, and vanilla extract to the bowl with the dry ingredients.

Using a sturdy spoon or silicone spatula, mix everything together until a thick dough-like mixture begins to form.

Continue mixing until no dry pockets remain and all ingredients are fully incorporated.

Check the consistency of the mixture by squeezing a small amount between your fingers. If it feels too dry and crumbly, add 1 teaspoon of milk at a time until it holds together easily.

If the mixture feels overly sticky or wet, add a small amount of rolled oats and mix again until the texture becomes manageable.

Fold the mini dark chocolate chips into the mixture, distributing them evenly throughout the dough.

Use a tablespoon or cookie scoop to portion the mixture into equal-sized portions.

Roll each portion between your hands to create smooth, compact energy balls.

Place the finished energy balls onto a parchment-lined tray or plate, leaving a little space between each one.

Transfer the tray to the refrigerator and chill for at least 30 minutes to allow the energy balls to firm up and develop their best texture.

Once chilled, serve immediately or transfer to an airtight container for storage. Enjoy as a high-protein snack, healthy dessert, breakfast addition, or post-workout treat.