Cool Bun – The Perfect Hamburger Restaurant in Brussels

By alison - March 1, 2012 (Updated: December 4, 2014)

Cool Bun Hamburger Restaurant in Brussels

Gorgonzola Burger in the foreground, onion rings and the Big Ben towering in the background.

Since our arrival in Brussels, Andrew and I have been searching for the perfect hamburger. In the early days, our quest went unfulfilled, but in the past few years the hamburger scene in Brussels has greatly improved. We’ve discovered a few locations with some darn fine burgers, but we still hadn’t found one we could call perfect. Everything changed, with our discovery of Cool Bun.

Burger joints have been popping up around Brussels like mushrooms, over the past year or so. Many of our favourite fellow bloggers have weighed in with their thoughts on the topic and we have dutifully added their suggestions to our “must visit” list. One restaurant that made repeated appearances was Cool Bun, on Rue Berckmans.

Last night, on a totally non-burger related CheeseWeb scouting mission, in the EU district, we passed by a sign. It read Cool Bun. Sure enough, a second location has recently opened on Rue Stevin. In the interests of research (we work hard for you dear readers!) we decided to try it out.

The menu is presented in English so we had no issues deciphering what we wanted to order. The only problem was what burger to choose! In the end, I was won over by the prospect of blue cheese and opted for the Gorgonzola Burger. Andrew went whole hog and ordered the Big Ben. We also decided to sample the onion rings, for research purposes of course.

Our mountain of crispy, golden onion rings arrived first. They came with a delicious, mildly spiced BBQ sauce. We both love onion rings and it’s one thing we rarely find in Belgium. These were perfect – fat with lots of crispy batter but not heavy and over battered. The portion was very generous and perfect for sharing. In fact, with burgers, it’s plenty to share with 4 people.

Crispy perfect onion rings at Cool Bun

Crispy perfect onion rings at Cool Bun

The generous potions continued when our burgers arrived before us. Mine was more than ample, especially as the burgers all come with fries and salad. It was oozing delicious blue cheese and was cooked to a perfect bright pink (I do love my burgers medium rare!) but if you prefer a well done burger, never fear, the servers ask how you’d like your burger prepared.

Andrew’s Big Ben was an aptly named tower of meat. It came with side dishes of toppings like jalapeños, avocado and sun-dried tomatoes.  He was given an additional helping of onion rings, as well. Yikes! We were also offered sides of ketchup and mayonnaise.

Cool Bun Hamburger Restaurant in Brussels

Andrew is about to tuck into his Big Ben

We paired our burgers with a half bottle of red wine, to keep our arteries flowing happily of course. On another health related note, Cool Bun uses organic and local ingredients. So if you’re going to clog your arteries with delicious burger goodness, at least you aren’t consuming harmful chemicals to boot.

We both gave our meals a valiant effort. In the end it was too much for us but we went down fighting. We just couldn’t finish all of the crispy fries and neither of us even looked at our salads.

Despite the battle, we both fell in love. Could Cool Bun be the perfect hamburger in Brussels? Quite possibly. Further research is of course necessary and we will be sure to keep you posted. In the meantime, check out Cool Bun for yourselves at one of its two locations.

Cool Bun

Rue Berckmans 34
1060 Brussels

Rue Stevin 168
1000 Brussels

For more great restaurants in Belgium and beyond, check out our Restaurant Review page.

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Big Cheese at CheeseWeb
Alison Cornford-Matheson is a Canadian freelance writer and travel photographer and the founder of She is the author of The Foodie Guide to Brussels: Local Tips for Restaurants, Shops, Hotels, and Activities. Alison landed in Belgium in 2005 and, over the years, has become passionate about slow and sustainable travel, in Europe and beyond. She loves to discover hidden gems - be they museums, shops, restaurants, castles, gardens or landscapes, and share them through her words and photos. She has visited 45 countries and is currently slow travelling through North America in an RV, with her husband, Andrew, and two well-travelled cats. You can also follow her work on Google+
One of my biggest goals in coming back to my home province was to learn as much as I could about our First... - 3 days ago


  1. Comment by simon

    simon March 1, 2012 at 11:17

    I saw this the other day and wanted to try it. Thanks for reminding me. I may even go today…

    • Comment by Alison


      Alison March 1, 2012 at 11:24

      Mmm, Have an onion ring for me 🙂

  2. Comment by Niovi

    Niovi March 1, 2012 at 13:20

    How about the Super Filles du Tram in the Flagey area?

    • Comment by Alison


      Alison March 1, 2012 at 13:31

      I have heard they are very good also and they are definitely on our list of places to try!

  3. Comment by Shweta

    Shweta March 1, 2012 at 13:45

    Jalapeños and avocado toppings! I am going!

    • Comment by Alison


      Alison March 1, 2012 at 13:53

      They have an actual Jalapeños burger… and a lobster burger 🙂

  4. Comment by Jon

    Jon March 1, 2012 at 18:25

    I have GOT to give this a try. It sounds absolutely delicious! Thanks for the dedicated research Alison and Andrew!

    • Comment by Alison


      Alison March 1, 2012 at 19:55

      The next time you come to Brussels Jon, the burger is on us 🙂

  5. Comment by Si

    Si March 1, 2012 at 18:34

    Hi Alison, I’m not normally a burger person, but those Onion Rings look delicious! I really should stop reading food reviews with an empty stomach!

    Love the blog, kind regards, Si

    • Comment by Alison


      Alison March 1, 2012 at 19:56

      Honestly, if I had to choose between the burger and the onion rings, I’d take the onion rings… but I’d rather not have to choose 🙂

  6. Comment by Jennifer

    Jennifer March 1, 2012 at 19:06

    We’ve eaten there several times and have never been disappointed!

    • Comment by Alison


      Alison March 1, 2012 at 19:55

      I’ve heard nothing but great comments about them and the service we had was wonderful too!

    • Comment by Alison


      Alison March 3, 2012 at 11:05

      This is also a place I’ve heard is good. It’s on our list of places to try!

  7. Comment by Unexpected Traveller

    Unexpected Traveller March 4, 2012 at 01:04

    This sounds excellent! And there’s one close to the office and the other on my way home … i shall have to try out both; for research purposes and also to be able to better comment on this article. As you do.

    • Comment by Alison

      Alison March 4, 2012 at 10:03

      Research is of the utmost importance. I’ll expect a full report soon!

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  9. Comment by Céline

    Céline June 14, 2012 at 10:14

    Amazing food! Service was a bit slow when we went on Monday but the food, oh my God – to die for! You could taste it was all home made! Definitely recommend!

    • Comment by Alison


      Alison June 14, 2012 at 10:36

      Thanks for your comment Céline! I’ve heard mixed reviews about the service too, particularly at the other location.Luckily we’ve had great service both times we’ve visited. And I agree, Yum!

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