In a large mixing bowl, add the creamy natural peanut butter, honey, nonfat powdered milk, and quick-cooking oats. Mix until it forms a cohesive, thick dough.

Dampen your hands slightly, pinch off portions of the mixture, and roll them into balls about the size of large gumballs.

Prepare a cookie sheet covered with wax paper. Place the rolled peanut butter balls on the sheet and chill in the refrigerator for at least 30 minutes.

After chilling, transfer the Healthy Peanut Butter Balls to an airtight container. They can be kept in the fridge for up to a week.