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    Cosmos Burger

    4.5 (388 reviews)
    Closed 11:00 am - 9:45 pm

    Order Cosmos Burger Takeout or Delivery

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    COSMOS BURGER ATMOSPHERE

    What's the vibe?
    Casual
    Touristy
    Trendy
    Dogs allowed

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    Recommended Reviews - Cosmos Burger

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    Matthew U.

    Food was okay 3/5 nothing exciting here prices a bit on the higher side for the quality it didn't justify it

    Blue Cheese and Spicy Jam
    Kiyomi F.

    This is honestly probably our favorite burger spot in downtown Oceanside due to the food itself. The burgers are always SO GOOD! Staff is always very friendly & helpful. The inside of the place is nice and clean, however the outside can be hit or miss. It's located on a busy street which can sometimes be flooded with people. Parking is pretty bad, truly depends what day/time you come but be prepared to walk.

    Cosmo burger
    Brett C.

    Cosmo Burger. What can I say? Unexpectedly, one of the top 5 burgers in my life. After I finished I had to ask for the manager and compliment the quality of my burger. Atmosphere: 4 Stars. Kind of a trendy vibe. Service: 5 Stars for friendliness. Value: 5 Stars. More expensive than the rest but it was my day off and I wanted to treat myself to something that might be worth it. Quality: 5 Star. It feels expensive and rare but I felt like I got a burger that was worth the money I paid for it.

    Monkey Fries
    Tanya P.

    My first time eating here an it was delicious. Possibly have a heart attack from the grease and cheese but definitely worth it. Came by in the afternoon and it wasn't busy. Bonus: got a window seat and people watched while eating. I ordered two Better Mac burgers, Monkey fries and two daft beers Me and a friend were having lunch Not a bad price for all of it. Burger was juicy and flavorful The fries crispy and good with bacon and cheese. Definitely nothing was disappointing If I'm in O'side again I'll be hitting this place up

    Cosmos Fries
    Autumn R.

    Had a delicious burger and a side of loaded fries. Nothing wild, just really flavorful grub that is reliable in Oside. The staff member was very laid back and friendly when I asked for suggestions, so I took her word and it did not disappoint! I went in on a weekday for lunch, so it wasn't busy. I dig the burger decor too (Kenan and Kel shout out). Look forward to recommending this spot to locals looking for a good burger in north county.

    Alan S.

    Probably one of the best fried chicken sandwiches I have had at a restaurant and this is not in comparison to like Chick-fil-A or a fast food chicken sandwich, but we're talking about a storefront that really prides itself in burgers. They are actually making an amazing crunchy perfectly sauced with pickles type of chicken sandwich that you can eat and enjoy your meal. The sauces you have a variety from their house sauce to a mustard sauce that's very specific to each of the burgers and sandwiches. I would have to just rave about the unique brioche bun that they use then the sauce that they include inside, which is a mayo type of mix with the pickles and then you have the actual dipping sauce that I don't know how I can describe so overall great place to have lunch and I would say they have a variety of sides like tater tots and french fries and onion rings my friend and I opted for the onion rings and I'm really glad I did because they were very crunchy not overcooked and it was probably not the healthiest meal, but it tasted delicious.

    Cosmos Burger
    Lilian W.

    Cosmos Burger is a restaurant located in the downtown Oceanside area. There's street parking nearby. It is walkable to the beach and pier. The burgers and fries were pretty good- it's not the cheapest, but still affordable for the portion size and quality. I tried the Cosmos Burger for $13 and the Chicks fries for $12. The burger felt like a standard cheese burger, but the chicks fried is the true stand out for me - the flavors of all components married each other well, and the fries were cooked to perfection. The surrounding areas walking to the restaurant can feel sketchy. Walk with a friend, not alone. There were suspicions characters lurking around the block that called others unkind names. Overall, I recommend coming here for a quick bite when visiting Oceanside.

    Cosmos Burger
    Joriene M.

    Cosmos Burger ($13) - This is my new favorite North County burger spot. The Cosmos Burger is as close to a perfect burger as it gets. The two patties were perfectly grilled and so tender, flavorful, and juicy. They nailed the caramelized onions and blew me away with their Cosmos sauce, which was like an elevated In-n-Out spread with hints of garlic. Highly, highly recommend!

    Lettuce wrap kids burger (fries not gluten free)
    Annie P.

    I've come here every year since discovering this spot during my first vacation at Oceanside when they were new and just opened. Since then I have had a positive and tasty experience every time! The workers are so kind and even remembered my family just from the first time we came, they always come to check in on you and make sure you enjoy your food which shows how much effort they put into their customer service. I recently become gluten intolerant so now I'm just subject to order their gluten free burger option which is a lettuce wrap and I was worried it wouldn't be that tasty (I have to admit) but I was so fortunately wrong!!! The wrap was crispy and the burger was seasoned perfectly it was still just as delicious and as their fries weren't gluten free I did start dipping some of my lettuce into ketchup as a substitute and to be honest it was still pretty good lmao . The portions are always filling and it's one of the only spots I eat at in Oceanside despite the other spots because it never does me wrong and is so reliable, when you're done with your food make sure you go up the street to 1022 gelato to truly capture the full flavor tour downtown Oceanside has to offer some of the most authentic gelato to pair some of the most authentic burgers is a perfect pairing.

    Hot chicks sandwich

    Hands down the best spicy chicken sandwich I've ever had! Went to the San Clemente location with my mom and we were blown away! 10 out of 10! No notes! Definitely going back.

    Lorean W.

    Smash burger was delicious and good flavor and size. So many good choices and hard to choose. I tried their tots and they were the best I've had! service was great and friendly. it's right on the main street and has an open air dining area plus bar. This may become my new favorite smash burger place!!

    Bbq burger and Monkey fries.
    Mikey S.

    I had the BBQ burger. It had 2 onion rings, house made bbq sauce, bacon, and cheddar, on a brioche bun. It was absolutely delicious. All the components were perfect and the burger patties were very flavorful and juicy. The monkey fries were tasty as well, with bacon, house sauce, green onion and served with spiced sour cream. Fast service with takeout. Parking is a bit tricky, it's right on a main drag, but I would circle the block a few times, no problem, because the food was kick ass.

    Lemonade hibiscus
    Shonci H.

    We ate at Cosmo's Burger as a family. We ordered the Basic Burger, Truffle Burger, Bleu Cheese Burger, and the truffle fries. The service was great! And everything was delicious! Our daughter got the hibiscus lemonade, which she loved. The restaurant was right off the road and walking distance from all of DT Oceanside. Inside was super cute as well!

    Truffle Honey Tenders

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    Tamer B.

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    6 hours ago

    The Better Mac sauce is in fact better than McDonalds, although it's not space themed like it said it was. I would like to come back!

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    1 year ago

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    Natasha P.

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    3 months ago

    One of the best burgers I have ever had! Service and atmosphere were perfect as well.

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    11 months ago

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    2 years ago

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    4 months ago

    The Spicy Jam and the Cosmo Burgers were stunning! Frings were ample and delicious. Go Here, you won't be disappointed!

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    Page 1 of 10

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    Ask the Community - Cosmos Burger

    Is it counter service or sit down with servers?

    You order at the counter and they will bring you you're food.

    Is there parking?

    Just general "downtown Oceanside" street and lot parking. There is not a dedicated lot just for this restaurant

    View All 4 Questions

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    We were on our way home from a quick stay in La Jolla and found this place, so we stopped - boy are…read morewe happy we did! The food was awesome! The service was stellar! The ambiance....super cool! We went with the recommendations of the counter gal, who was super friendly, she did not steer us wrong! Hubs had the firebird sandwich, and his verdict...delicious! I had the little pecker which came with 3 chicken tenders, biscuits (with THE best honey butter) and fries (sooo good)! Dogs are welcome at any table (both inside and outside), which was a huge plus since we had our pup with us. The location is easy to get to, pretty much right off the 5 freeway. We will definitely be back!

    It saddens me a bit to write this review because I've loved Crack Shack for years, but…read moreunfortunately after my most recent visit, I feel like the food quality has gone down. My usual order (to share between 2 people) is the half bird (5 pieces of chicken) and the mini biscuits with miso maple butter. The mini biscuits are tasty and moist, and the miso butter complements them well, adding the perfect amount of sweetness! However, both of the chicken thigh pieces were quite dry. The restaurant provides a self-serve sauce bar with plenty of sauce options. They also provide large paper towel rolls at each table as well as multiple sinks located around the restaurant so that it is easy to clean your hands after eating! The servers are very attentive.

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    Cosmos Burger - burgers - Updated August 2026

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