When the nuts have broken down into a smooth, creamy butter, add the chia seeds, salt, and cinnamon and/or vanilla extract, if you’re using. Process to incorporate, and taste. Adjust add-ins as desired. If it's not blending up as smoothly or thinly as you want, add a little bit of coconut oil here.
I like a lot of cinnamon in my nut butter, so I used a little more than a tablespoon of it. I salted to taste. Also, you can always use toasted nuts if that's your preference!