At Fatburger & Buffalo’s Express, you’ll find Fatburger’s signature handcrafted burgers, sandwiches, french fries, hand-breaded onion rings & real ice cream shakes alongside our world famous fresh, never frozen chicken wings and sauces from Buffalo’s Cafe. Whether your craving a 100% pure lean beef hamburger, a plant-based Impossible Burger, a hand-breaded crispy chicken sandwich, bone-in or boneless wings, or a Craig’s Vegan Shake – we’ve got you covered. Visit us & you’ll see why it’s good to be Fat.
Long-running LA-based chain serving burgers in several sizes, plus other classic fast-food options. Based on 55 reviews, the restaurant has received a rating of 3.5 stars. Price $$
✔️ Dine-in ✔️ Takeout ✔️ No-contact delivery

Address:
2022 First St, Simi Valley, CA 93065
Phone: (805) 285-7878
Website:
Hours
| Friday |
10 AM–11 PM |
| Saturday |
11 AM–10 PM |
| Sunday |
10 AM–10 PM |
| Monday
(Labor Day)
|
10 AM–10 PM
Hours might differ
|
| Tuesday |
10 AM–10 PM |
| Wednesday |
10 AM–10 PM |
| Thursday |
10 AM–10 PM |
Menu
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Photo Gallery
Reviews
Melanie Good
This is the best burger ever!!!! it’s really take their time and make the burgers amazing❤️ and the location is so clean I love that burger, but this one is hands-down worth pulling into ❤️❤️❤️
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Eric Cervantes
Fat Burger is a long-standing hamburger chain. Synonymous with the southern California culture, it serves meaty hamburgers with thick cut french fries and creamy shakes.
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dabmulisha
This place has only gone down hill since it opened! Here on a Wednesday middle of the lunch rush and they are closed. Google says there open as well as doordash and all the other food apps place is a joke
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Scott La Rocket
Wow! I live in Ventura, we used to ha e a Fatburger in town but it closed a few years ago. I was in Simi Valley and was eating town when I saw this location at the corner of First st. X Los Angeles Ave.
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Danielle Carrillo Whitmore
We decided to give Fatburger a try for dinner. We ordered the thousand island fat burger and fat fries to go with it. The food was good and I enjoyed the mango lemonade to drink. They offer a variety of burgers, sides, and wings. The restaurant is new and very clean. The woman taking our order was not the friendliest but that seems to be the norm lately.
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Melanie Good
Amazing! I got the double X fat burger, and it was the best I’ve ever had ❤️
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Pedro Leon
My wife ordered the Western bacon barbecue Burger?
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arleth
really recommend this place ive been to many burger spots but this a very special place, very clean. the girl who took my order was so nice and the food was hot, and delicious!!
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Garry Star
waited too long for a barely warm burger (cold as chewed since the lettuce and tomato were nice and cokd) and slightly warm onion rings (good sized serving) that would have been good if they were hot.
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Renee Davey
We have celebrated Fat Tuesday at at least twice monthly as a fun lunch date. The food has been excellent though sometimes slow to arrive ( staffing situation), but with good humor and when something is brought to their attention, they resolve it right away. BTW we love the “skinny fries” and thanks for making many rainy Fat Tuesdays fun. Now we are enjoying the outdoor patio.
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