We are a fast-casual “build your own” concept with one focus: to bring back the Great American Burger that was lost in fast food. Guests love the freedom to be their own boss with 30+ ingredients to choose from, including always fresh, never frozen 100% all-natural proteins, 100% grassfed and grass-finished beef, fresh-cut fries cooked in 100% Non-GMO sunflower oil, and locally sourced veggies when available.
In addition to our premium proteins and endless topping options, we have something for everyone including kids meals, vegan and gluten free options and keto friendly choices.
Based on 559 reviews, the restaurant has received a rating of 4.3 stars. Price $$
✔️ Dine-in ✔️ Takeout ✔️ No-contact delivery
Address:
15080 Kensington Park Dr, Tustin, CA 92782
Phone: (657) 245-3080
Website:
Social Profile: 
Hours
| Friday |
11 AM–9 PM |
| Saturday |
11 AM–9 PM |
| Sunday |
11 AM–9 PM |
| Monday
(Labor Day)
|
11 AM–9 PM
Hours might differ
|
| Tuesday |
11 AM–9 PM |
| Wednesday |
11 AM–9 PM |
| Thursday |
11 AM–9 PM |
Menu
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Menu Photos
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Reviews
Kyle Tucker
From the moment I sank my teeth into that juicy masterpiece, my taste buds were treated to a symphony of flavor that made me question every other burger I’ve ever had before.
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Maxim Flemdan
Food is comparable to five guys with price and taste, but I would say tastier and less greasy! After eating the burger and fries I didn’t feel to greasy after or gross, and it tasted fresh. Will definitely come back again, burgers taste great and well prepared. Lots of seating inside and outside around the building
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Troy Thacker
I have to say, this place does it right. This was the BEST burger and fries I’ve had in a very long time. Great tasting and fresh ingredients. I can’t wait to go back and have another. Wish I had taken a picture, I will next time and update my post. Again the Burger and Fries were AMAZING, great job staff.
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JEXXICA JANETT
I’ll let the pictures speak for themselves, but this was the best burger I have tasted! I had the double 100% grassfed beef patty. I added garlic sauce, american yellow cheese,spinach, avocado, grilled onions, grilled jalapeños(1 or 2 were spicy), and tomatoes. My husband ordered the same, except he added an egg, had the whole wheat bun, and instead of spinach, lettuce. The ingredients were so fresh and delicious, you can taste the quality of the food the service was great, the 2 gentleman that were there were very patient and also very informative about the different things they had available. We dined in, it was a nice cute atmosphere except our table had some breadcrumbs and needed to be cleaned, but other than that amazing food and service!
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Johnny B
Great burgers as always. Slightly undercooked this time, but usually cooked to perfection. Lettuce it but too leafy.
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Danny Liberty
Delicious, mouth watering burgers. Large variety of toppings and everything was cooked fresh to order. Also loved their fries. The staff is incredibly friendly and their patio area was really nice and inviting. We’ll definitely be coming back!
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AliAsghar Shamsuddin
I had heard about this place as it has halal beef burgers. However, the burgers were subpar, there was no seasoning on the beef, the veggies tasted bland, and the burger overall was super underwhelming. Fries were soggy and seemed that they were frozen and not fried to order.
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Maria Harrison
We love burger boss because the ingredient quality matter as much as the taste to us. On our last visit, the service was so good, it was review-worthy. It’s really nice to be treated with intentional care for our experience and actively check in to meet our needs. It’s one of our favorite places to eat when we’re in the mood for a burger!
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Fred Rea
This is a great Burger place the Burger patties have excellent flavor this place shows you the difference between fast food and real food. The service was excellent the host was very Friendly and pleasant and helpful with my order. My mom and I really enjoyed our meal we were completely full and we are looking forward to coming back for our next choices because this menu has a lot of good items on it plus you can build your own Burger and boy do they have a lot of variety of ingredients to choose from.
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Vee Dinh
Wanna have a burger today?
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