My Mellow Mushroom experiences started in Florida, so after I moved here I was stoked to see one open in Ahwatukee. This Mellow location is fantastic for happy hour. The bar has indoor / outdoor seating (hallelujah, we are finally in "sit outside" weather again), a bazillion beers on tap, fantastic bartenders and happy hour during the week.
The pizzas are on the high end of the pizza pricing spectrum but they're worth it. Mellow's crust is unique and delicious. Try the Magical Mystery Tour or the Philosopher's Pie. Or just get an appetizer or a Chopped Salad - those are good, too.