Best donut I've ever had. Beats Blue Star in Portland.

Nicest crew around. Maybe a tie with their neighbors Bloc 11. These donuts are hearty and delicious. Though they're more expensive than Boston's beloved Dunkin, you do get what you pay for.

Do yourself a favor and get one of everything!

Maple bacon, salted caramel, and crunchy hazelnut are favourites, but all are good. The coffee is great and the staff super-friendly. I make a pilgrimage to this place every time I'm in town. ❤️

I actually hate donuts, but theirs is too good, it's like a piece of heaven in your mouth. Maple Bacon Donut is pure bliss

Great donuts, but pricey. Donuts shouldn't cost $3.

(Best of Boston 2014-BEST KEPT SECRET) Improper Bostonian says, "This is how legends are born. Step 1: Email Union Sq. Donuts by 1pm to place your order for next day delivery."

(Best of Boston 2013-DONUT) Improper Bostonian says," Been seducing local sweet-tooths (and breaking hearts when the goods sell out) since Valentine's Day '13."

The bakery has been making history since it opened, turning out inimitable flavors like maple bacon, chocolate chipotle, and sea salt bourbon caramel (the menu changes frequently).

Maple bacon (and many others) sold out a few minutes before we arrived ~11:15 but the other donuts are still delicious.