Toss everything into a food processor and process until the mixture starts to go smooth and clump into a ball. The dates will be all chopped up but you'll still have bits of nut.
Turn the mixture out into an 8 or 9 inch square dish lined with parchment paper. Use your hands to firmly press the mixture into the bottom of the dish. Cover and refrigerate for 30 minutes.
Remove the bars from the pan and cut into pieces using a sharp knife.
Store in an air-tight container in the fridge or freezer.
Enjoy these bars cold or frozen.
Notes
I think a high power blender could be used to make these, but I haven't tried it myself.
If your dates are very dry or starting to turn a little white (happens when they dry out) let them soak in warm water for 10 minutes before using, strain well and then use.