Soak the cashews for at least an hour in a bowl covered with water (I boil the water first when I'm low on time to speed this up). Then rinse and drain.
In a food processor, mince the garlic, and then the shallot. Add all remaining dressing ingredients, including the cashews, and process for a minute or longer. Taste and adjust salt/water as needed.
Make the salad: plate your favorite ingredients, and top with the cashew tahini dressing. Serve immediately.
Notes
Leftover dressing will keep in the refrigerator for about 3 days.