Preheat oven to 350 degrees. Place sesame seeds in a rimmed sheet pan and cook until lightly toasted toast, but not browned, about 5 minutes, tossing seeds ever couple of minutes with a spatula. Remove from the oven and let cool slightly.
Place sesame seeds in workbowl of a food processor with olive oil. Process until smooth and paste as consistence slightly thinner than peanut butter, adding more oil if necessary. Store in an airtight container in refrigerator.