Start by ensuring you have pitted Medjool dates. Slice each date along one side and remove the pit.

In a mixing bowl, combine the chopped walnuts, chopped pistachios, honey, cinnamon, and vanilla extract. Stir until well mixed.

Using a spoon or fingers, gently fill each date with the nut mixture, packing it in firmly.

Enjoy immediately or store in an airtight container in the refrigerator for up to one week.