If you only have deglet dates or another variety, that’s fine too! They will just be less meaty and smaller, so you may need to use more.
In a small bowl, mix together the peanut butter, nuts, oil, vanilla, and cinnamon. If peanut butter is not salted, add ¼ teaspoon salt.
Fill each date with about 1 teaspoon peanut butter filling (depending on size of the date), pressing the filling into the opening of the date. Top with cacao nibs and flaky salt (if using).
Place in the freezer for at least 30 minutes to solidify, then transfer to an airtight container in the fridge or freezer. If storing in the freezer, let them sit out for 10 or so minutes before devouring!