Heat oven to 350 degrees. Line 2 cookie sheets with silicone or parchment.
Combine nut butter, eggs, and vanilla in a large mixing bowl.
Add sugar, cocoa powder, baking soda, and salt. Beat until completely mixed together, about 1 minute. Fold in chocolate chips.
Using a tablespoon-sized cookie scoop, drop onto prepared cookie sheets about 2 inches apart.
Bake 8-9 minutes until puffed and crinkled (they will still be soft) and let stand on sheet about 5 minutes before transferring to a rack to cool completely.
Notes
*The mild flavor of cashew butter is preferred, though the others will work fine, you'll just taste the nut flavor more. I haven't tried seed butters. NOTE: If your nut butter is VERY drippy, you may need to add another tablespoon of cocoa powder so they keep their shape when cooked.**I usually decrease the sugar to 3/4 cup, but the cookies are definitely less sweet, so it's up to you and your family's preference.Storage:
To eat within a couple days, keep in an airtight container at room temperature.
For longer storage, freeze in airtight container for up to 6 months.