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    Union Square Donuts

    4.1 (26 reviews)
    Closed 7:00 am - 8:00 pm

    Order Union Square Donuts Takeout or Delivery

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    Blueberry Pancake
    Michael S.

    I was in Harvard square and finally had the chance to get a donut here. Ordered the Blueberry Pancake Donut. Insanely delicious and fast/ friendly service. The isn't anywhere to sit inside but there is a lot of scenery outside. Will be back to try more donuts

    Donuts
    Eugene C.

    While in Boston over the summer, I did some research on what to try food wise while in town and the Boston Cream Pie was one of the recommended items. Union Square donuts was a place recommended to try. Their donuts did not disappoint. They were tasty and fresh and lived up to the recommendation. I would definitely come back to try other donuts from here when back in town. The space itself is fairly tiny and compact. The service was quick and friendly.

    Assorted donuts that at first appearance looked quite delicious.
    Stefan C.

    The service was very disappointing and the donuts actually tasted awful . The ambiance was cafe style and welcoming. Here's the specifics! Bad tasting donuts! Bad service! Very expensive for what you get! My wife, son and I visited this small establishment during our last minute student tour of Harvard University. I looked in the window on the walk by and decided to stop in and give the donuts a try. It began with a warm greeting from the man with glasses behind the counter and fresh haircut. He said hello and welcome. After waiting for another customer to complete his purchase the man behind the counter asked what I wanted. I told him and the young woman there who gave me a cross scout that I wanted a plain donut. The man's smile turned into a frown quickly. Maybe because it was a specialty donut shop which I hadn't realized. Both of the workers had their arms crossed and immediately stopped talking to us. I asked about other flavors and they both looked at me as if to say, please leave. I ordered three different donuts and the price came to almost $16z. Wow! Expensive donuts. My family and I left the store and we each began eating the donuts. We spoke about the price but felt it could be worth it if it tasted good. The donuts were not good. They looked really tasty however tasted really bad. I've actually never tasted a disgusting donut before and this was the first. The customer service was terrible and the donuts were bad. Union Square Donuts gets an "F" rating. Sorry, not many proper pictures at this time.

    Boston Cream
    Mariah C.

    Small little shop, the amazing donut aroma hits you upon opening the door. The Boston cream donut was lovely! Would love to try more of these donuts. Service was quick, so yummy!

    Les R.

    Walked past Union Square Donuts. After lunch I encouraged my partner to circle back so we could grab one. It's a small shop, but cute. The staff was friendly and the selection was impressive. Everything looked delicious. We went with the Boston Cream donut. It was the obvious choice and didn't disappoint. If you are ever in or around Harvard Square, or in Cambridge, this is a place to go!

    Boston Cream
    Charlie S.

    It was our first time in Massachusetts so we decided to try the traditional Boston Cream donut - it was absolutely delicious with a really nice texture and a generous portion size! The staff were so lovely and service was incredibly quick Bear in mind when visiting that there is no seating area at this location, but is only a short walk from Harvard Square!

    Fatboy S.

    Forget what kind of donut I got there - but it was bomb ! Service was super friendly and helpful. Would def return when/if in the area.

    Grand opening 10/07/2023
    Maria G.

    Grand opening in October 2023! Definitely try the maple bacon, Boston cream, Belgian dark chocolate, and so many more! The shop is tiny, so it is takeout only.

    Sophie B.

    Great donut lots of really original flavors. Tried the Vietnamese coffee one, the canoli one and the Guava cheese roll. I honestly wasn't floored by either but they were definitely both really solid donuts. I'd def come back to try more.

    Vietnamese Coffee
    Monica O.

    The donuts are really good! I'm not usually a big fan of donuts and I usually don't try other flavor besides the classic glazed but I was pleasantly surprised how nice the Vietnamese coffee donut was! The service was fast. It was not too busy when we went so we were able to order and get our donut immediately. The shop itself is a small, cute donut shop. You get to see all the donuts they have on the front display, which makes for a delicious and nice display

    Caramel Pumpkin Cheesecake Donut
    Annie G.

    I had a great really great experience here today! I was originally attracted by their collection of fall-flavored donuts: Apple cider cake, pumpkin cream bar, pumpkin spice latte, and apple ginger! A lot of them also have vegan versions. I finally went there today to treat myself. The service was really good! Although it was a small grab and go place in Harvard square, the server greeted me warmly (I wish I've asked their name!). They recommended according to different flavors and textures (cake-based and yeast-based) to me patiently. And I ended up having "caramel pumpkin cheesecake" donut since it looked the most appealing and it has cheesecake filling. Since I was about to travel out of town and worried that these seasonal flavors will be leaving so I asked if they will be available next week--- turns out that many flavors are leaving tomorrow! I also really appreciate the server here who nicely checked their notebook and pointed out which flavors are leaving while others are not. And now comes to the tasting time!! It is a really eye-opening experience. The donut dough is so fluffy and soft. It's not over sweet at all. And compare to other chain-branded donut, they don't have that metal-chemical flavor that you know is overdosed to raise the dough. What's more, you can see the vanilla bean in the donut dough which proves a solid quality! The pumpkin cheesecake filling--- surprisingly creamy, rich, and tastes exactly like pumpkin pie but lighter/airier. I also appreciate the nutmeg and cinnamon flavor that stood out. The caramel outside is nicely covered and add pleasant sweetness. The donut is topped with gingersnap cookie crumble, tasting like a fancy version of pumpkin pie crust--- which makes the donut like a decomposed/reorganized pumpkin pie! I paired it with coffee but honestly the donut is not over sweet at all that you will not be overwhelmed even eating itself as breakie. All in all, I am totally fall in love with this donut shop! (Oh there is a discount if you are Harvard affiliated!) I would recommend if you wanna treat yourself with decent dessert while feel good about eating it (not-so-guilty because of the good stuff and reasonable sugar content!) I will definitely come back!!

    One of my top donut shops. They have fun trendy flavors that cater to any taste. I got the cinnamon sugar donut and it was soft, super fluffy, and delicious. Not overly sweet, and not too bland. I finished it hours later and tasted just as perfect. They also have some of the best coffee I've tasted in Cambridge. The shop is small with not much seating, but super cute. Overall 10/10 and would love to try more flavors.

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    2 years ago

    Best donut I've ever had! Workers are friendly. You won't regret going to this place!

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    3 years ago

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    2 years ago

    Really cute USD in Harv Sq. Such nice people and the donuts are as always, perfection!

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    Diesel Cafe

    Diesel Cafe

    3.8
    (1k reviews)
    1.6 mi
    $$

    Definitely one of my fav spots in Davis sq. to quietly hangout and get some work done…read more The coffee is always great, the vibes are always relaxing and lots of seating if you avoid the crazy high footfall time. The people are always smiling and although dogs are not allowed but they do let you in with your buddy for picking up orders. That's a plus for me as I mostly will order coffee for pickup when am there with my doggo. Woohoo...

    I visit the area often and have stopped by Diesel every now and then for a drink or a quick lunch…read moreand never really had an issue. I've even popped into the photobooth on a quiet day, which was a fun experience. Today I ordered ahead and found a seat near the back. I went up to the pickup counter a few minutes before the estimated pickup time and watched as people got their orders. A few minutes after my pickup time when the rush died down a little (order status was still pending), I still didn't hear my name or see my strawberry lemonade and bagel sandwich on the counter so I checked in with an employee. I gave them my name and the employee gestured to a hot latte. It obviously wasn't my order so I asked again if there was an order for Deborah and again, the employee rather impatiently insisted that the latte was mine. I had to clarify my name again before they finally took a look at a bagel that had been sitting right in front of them. They didn't even apologize and said something about someone else taking my strawberry lemonade before finally making me my drink. My drink was good but my sandwich was lukewarm. Weird interaction that left a bad taste. I've never had a strong reason to come back to Diesel but I now have a reason to stay away.

    Photos
    Random Sat afternoon
    Random Sat afternoon
    Iced Latte - 16oz, cardamom bun, Plain Croissant
    Iced Latte - 16oz, cardamom bun, Plain Croissant
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    Union Square Donuts - donuts - Updated June 2026

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