Place the walnuts in a food processor and blend until a grainy flour forms.

Add the dried apple slices, pitted dates, apple pie spice, and vanilla extract to the food processor.

Blend until everything forms a thick paste, occasionally scraping down the sides of the processor to ensure even mixing.

Use a heaping teaspoon to individually mold the paste into 20 balls.

Serve immediately or store in an airtight container for later.