Rinse and drain chickpeas, reserving about 2 tablespoons of the liquid from the can. In a large bowl, combine chickpeas and reserved liquid. Use a potato masher to mash the chickpeas to your desired consistency. Add celery and shallots and fold until incorporated.

In a small bowl, whisk together the tahini, lemon, Greek yogurt, Dijon mustard, salt, pepper. When the dressing is smooth, pour over the chickpeas, then sprinkle with dill. Mix together until combined. Serve immediately, or store in the fridge in an airtight container for up to 3 days.