Add the oats, walnuts, cinnamon, and freeze-dried apples* to a food processor, and pulse until the texture turns to a medium-coarse meal. Dump the dry ingredients into a mixing bowl.
Remove the pits from the dates, and add them to the food processor. Run the processor for about two minutes, until the dates clump together in a single sticky ball. Place the ball in the mixing bowl with the remaining ingredients.
Coat the date ball with the dry meal, then use your hands to continue kneading the dry ingredients into the sticky dates, until well combined.
Roll the mixture into balls. We like them just under an inch in diameter. Store in an airtight container at room temperature up to a week, or refrigerate or freeze for up to a month.
*When choosing dried apples, we recommend the freeze-dried variety for the best texture. Freeze-dried apples are often sold as "apple chips" and are crispy, rather than soft.