Eat Crispy Burger

Order the Mushroom Swiss Crispy Burger in San Marcos

If you are searching for the ultimate savory flavor craving, our Mushroom Swiss Crispy Burger experience is built for you. We take fresh, never-frozen, 100% grass-fed, antibiotic- and hormone-free Angus beef and sear it to perfection. Then, we stack on all-natural Swiss cheese, garlic mushrooms, and creamy garlic aioli. It is all served on our toasted, seed oil-free bio bun. It is the perfect bite for any local food lover.

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Savory Mushroom Swiss Flavor Built for Your San Marcos Day

While we don’t have a kitchen right inside the San Marcos city limits, our original spot is just a quick drive away in neighboring Encinitas! Our focus has always been straightforward: to deliver the absolute crunchiest, most flavorful smash patties you can get anywhere in San Diego County. We skip processed tricks and concentrate on high standards. We use top-tier, fresh ingredients, create a golden lacy crunch, and maintain lightning-fast kitchen speed so you can get back to enjoying your day.

From our Mushroom Swiss Crispy Burger to our all-day breakfast sandwiches and thick, real-dairy milkshakes, every item is crafted with high-quality 100 percent Angus beef and custom seed oil-free bio buns. We prioritize incredible flavor, clean cooking practices, and welcoming energy. This is the relaxed, top-quality burger joint you have been looking for near San Marcos, and our crew is ready to assemble your perfect meal.

Explore Our Menu: AM Griddle, Smash Burgers, and Real Ice Cream Shakes

Plain Egg and Cheese: Simple breakfast sandwich featuring egg, melted cheese, and toasted brioche bun.

Sunup Sandwiches & All Day Griddle Goods

Start your morning right with a toasted, seed oil-free bun packed with fresh, hot ingredients. You can grab a Plain, Bacon, Sausage, Ham, Burger, or Pastrami Egg & Cheese Sandwich. If you are really hungry, go for our massive Monster Breakfast Sandwich.

Hand holding a freshly made crispy burger with melted cheese and toasted brioche bun in a commercial kitchen setting.

Sizzled Grill Classics with Lacy Edges

We smash our fresh, never-frozen beef onto a hot flat-top to get that signature crunch. You can pick from The Original OG Crispy Burger and The Cali Crispy Burger. Don’t forget to add a side like our Regular Fries, Large Fries, or a mix of Half Fries / Half Rings.

Cold Refreshments & Chilled Taps

Cool down with a classic Fountain Drink or a fresh, tangy lemonade. Take a look at our drink station for chilled bottles, including Mexican Coke, flavorful Jarritos, or refreshing Coconut Water.

Vanilla Shake: Classic vanilla milkshake topped with whipped cream and served with a straw.

Thick Real Dairy Shakes & Sweet Treats

You cannot miss out on our shakes. We use real dairy and ice cream to make them thick, cold, and delicious. Choose from Butterfinger Shake, Oreo Shake, Vanilla Milkshake, or our super-rich Crazy Ding Dong Shake.

Cookies Ice Cream: Warm cookie served with a scoop of vanilla ice cream for a classic dessert option.

Why Our Mushroom Swiss Smash Burgers Stand Out

At Eat Crispy Burger, you will never find pre-cooked meat waiting under a heat lamp. Every order is fired up the second it hits our system, using only premium, never-frozen, grass-fed Angus beef. By pressing the fresh beef hard against our searing-hot iron, we lock in all the natural juices while building that delicious perimeter you crave. If you are living a plant-forward life, we have plenty of room for you at our table.

Easily swap any meat for our savory Impossible Crispy Burger, or go bun-free with our famous, protein-packed Crispy’s Famous Burger Bowl. Want to feel like a true VIP? Join our digital Birthday VIP Circle and get a special surprise reward on your birthday! We are committed to using the best ingredients to give you the freshest, tastiest, and most satisfying burger experience you have ever had.

Why Our Fans Love Us:

Crispy Burgers. Real Flavor. Built to Crave.

Find Your Nearest San Diego Location

Serving San Marcos from our nearby Encinitas hub and other countywide locations! Find the one closest to your route:

  • Encinitas (Closest to San Marcos): 905 Orpheus Ave. | (760) 230-3535
  • La Jolla: 4150 Regents Park | (858) 379-1002
  • Convoy: 4898 Convoy St. | (858) 379-1001
  • National City: 327 Mile of Cars Way | (619) 981-7878
  • Oceanside: 207 N. Coast Hwy. | (760) 406-4325
  • San Diego: 5120 College Blvd. Suite #125. 


Operational Timelines:

  • Monday – Thursday: 10:00 AM – 10:00 PM
  • Friday: 10:00 AM – 12:00 PM
  • Saturday: 11:00 AM – 12:00 PM
  • Sunday: 11:00 AM – 9:00 PM


We keep our kitchens to the highest standards of safety and cleanliness every single day.

A train crosses a bridge over a river.

Crispy Burgers. Real Flavor. Built to Crave.

Experience the Ultimate Mushroom Swiss Crunch

Ready to enjoy the best crunch near San Marcos? Stop by our nearby Encinitas location, place a quick order online for a fast pickup, or find us on your favorite food delivery app. Explore our story, check out our full list of menu items, and find out for yourself why so many people are making us their new go-to burger spot.

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