Dunkin’ Iced Coffee fans can now sip their favorite bakery flavors! Dunkin’ Iced Coffee Bakery Series introduces uniquely-Dunkin’ flavors to ready-to-drink coffee. Brownie Batter Donut Iced Coffee combines Dunkin’s proprietary iced coffee blend with real milk and cane sugar plus delicious flavor inspired by Dunkin’s in-shop bakery item. Brownie Batter Donut Iced Coffee features a rich, chocolatey taste inspired by Dunkin's popular brownie batter donut.