Preheat the oven to 350 degrees and line a large tray with parchment paper. Place the pecans in a single layer and bake for 5 minutes and remove from the oven.
Transfer the pecans to a food processor and the salt, and any optional ingredients if using. Process on high speed, scraping down the sides often. The mixture will turn from a crumbly mixture and eventually into creamy, delicious pecan butter. Depending on your machine, this can take anywhere from 3-10 minutes. You may want to stop the machine every couple of minutes or so to give it a break and avoid overheating.
Store in a glass jar with lid at room temperature for up to 1 week, or store in the refrigerator for up to 4 weeks.