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Fatboy's the Burger Bar
187 Upper Thomson Rd, Singapore 574335
Opening Hours
STAMPEDE Score
Moderate confidenceScore: 85 / 100
Based on 5 data points · Updated 9 days ago
Editor’s Note
Last updated 30 May 2026
Our take: Fatboy's the Burger Bar consistently delivers on generous portions and classic American-style burgers.
Reviewers frequently highlight the substantial size of their burgers and sides, with many noting they were full after just a burger and fries.
The 'Fat Basterd burger' and 'High Burglary' are often praised for their juicy patties and flavour combinations.
Sides like crispy fries, tater tots, and jalapeño poppers also receive positive mentions.
We think the atmosphere contributes to the overall experience, with some describing it as reminiscent of a US diner.
While the food is generally well-received, some might find the portions overwhelming.
We'd recommend visiting on a weekday afternoon to secure a table easily and avoid potential crowds.
It's a solid choice for an indulgent burger meal, especially if you're in the Upper Thomson area and looking for a hearty option.
Signature
Fat Basterd burger
Best time
Weekday afternoons
Price
$$ ($15-25/person)
Score: 85 · 5 sources
What customers say
Fatboy's the Burger Bar is highly praised for its generous portions and delicious, juicy burgers like the 'Fat Basterd' and 'High Burglary', often accompanied by crispy fries or tater tots.
Customers appreciate the American-diner atmosphere and the convenience of accepting CDC vouchers.
While food quality is consistently good, some find the portions so large that takeaways are necessary.
Google Reviews
really delicious burgers and massive portion sizes! the fries were super crispy and fluffy on the inside. the restaurant is just a few mins walk away from upper thompson stn. the best part was that cd…
Post hike indulgence = milkshake, burger, tater tots and a cheeky pint 🥤🍔🍟🍻 Tbh, not sure why it’s taken me so long to have a meal here considering it’s so near my place! Overall, pretty decent f…
Still one of the best go-to burger bar for me, portion is big and the atmosphere makes me feel like I’m in the US. Their salad at the side is also fresh and refreshing with a slightly sweet vinaigrett…
Fatboy’s Upper Thomson is my go-to for indulgent burger nights, and the High Burglary is my spicy ride-or-die. That fiery kick, juicy patty, and melty cheese combo? Chef’s kiss. Pair it with crispy ja…
Two of us went on a weekday afternoon at around 3pm and got a table easily. Both of us ordered a burger each, as well as the tatter tots. We were full after finishing the burger and fries, and had to…
Reviews from Google
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