am I missing something? I don't see Tahini as an ingredient in this recipe?

You're right - it is missing from the ingredient list. I checked other sites where this recipe is listed and it is missing there as well. Hopefully Sarah Cottrell, the recipe author will respond. In the meantime, you can experiment by adding 2 tbl of tahini at a time to the rest of the ingredients until you get a flavor and texture you like.