Line an 8x8 square pan with parchment. If your dates are hard, soak these in warm water for 30 min first and drain.
Blend in a food processor dates, almond butter, oats, cocoa, salt until mixed (it will ball up, that's ok).
Transfer to a bowl and gradually add almond milk (or date soaking water) to create a bar dough. You want a dry dough not sticky, so add as little as possible.
Fold in chocolate chips.
Press into the pan, freeze at least 1 hour, ideally overnight.
In the morning slice and enjoy!
Notes
These magically don't thaw in room temperature so feel free to pack them in lunch boxes, store refrigerated or in room temperature! If you used more milk than necessary they might get a little soft, though they will still be Delicious.