Best Deep Dish Pizza Outside of Chicago

Pi Pizzeria (St. Louis, MO)
St. Louis is best known for flat, yeast-less pies topped w/ processed cheese reminiscent of Velveeta. While that’s all fine and dandy, skip that and go deep into Pi, where 3.14 isn’t just the namesake, it’s also the extra weight you’ll log after devouring these traditional South Side pies.