Isles Bun and Coffee 
This is a combination bakery and coffee shop that has a tub of frosting at the condiment station. It's a sudden favorite! The shop smells delicious from the sidewalk. They do specialize in buns like hot cross buns and cinnamon rolls. All are baked right there. There are a few tables on the sidewalk along 28th, just around the corner from Hennepin. Parking can be tough but if you're Uptown, just walk over. Not a lot of tables and outlets inside but, with a tub of frosting, who cares?