September is the time of year when we swap beach bags for book bags, flip-flops for long-sleeved tops, and backyard barbecue for … venison? Chef Anthony Caturano is putting the meat center stage during his first monthly Seasonal Spotlight at Prezza (24 Fleet Street, Boston, 617.227.1577), highlighting one seasonal ingredient each month. On this month’s menu is wood-grilled venison served with creamed corn, sweet potatoes, and an apple-cider reduction ($36). For reservations, call 617.227.1577