In a large skillet over medium heat, toast the sesame seeds for approximately 3-5 minutes, stirring regularly. Remove from heat and allow to cool slightly.
Add the toasted sesame seeds to a food processor and pulse until seeds form a crumbly paste, approximately 3-5 minutes.
Pour in 2 tablespoons of olive oil and pulse for 1-3 minutes, scraping down the sides as needed in-between pulses.
Add between 1-2 tablespoons more of the olive oil, one tablespoon at a time, pulsing in-between. Only add as much oil as needed to help create a smooth tahini paste. You can add a little more olive oil if you prefer it to run more, like a sauce; use less if you prefer a thicker paste.
Sprinkle in the salt and pulse to combine. Taste, and add more salt if needed.
Transfer tahini to a mason jar or other airtight container with lid and refrigerate for up to one month.