Shake Shack ‘Shroom Burger Price, Nutrition and Allergens
What Is the Shake Shack ‘Shroom Burger?
The ‘Shroom Burger is a vegetarian fan-favorite from Shake Shack that features a crisp-fried portobello mushroom stuffed with melted muenster and cheddar cheeses. It’s topped with lettuce, tomato, and ShackSauce, all sandwiched in a toasted potato bun. It delivers a crunchy exterior, creamy cheesy core, and a fresh, flavorful finish.
Crisp-Fried Portobello Mushroom (filled with melted Muenster & Cheddar cheeses)
Lettuce (1 cal)
Tomato (5 cals)
ShackSauce (60 cals)
Toasted Potato Bun
How to Order the Shake Shack ‘Shroom Burger (Secret Menu Tips)
You can order this online, in-store, or via app. For extra indulgence, add crispy onions, bacon, or cherry peppers. Looking to lighten it up? Choose the lettuce wrap to drop 180 calories.
Can You Customize the Shake Shack ‘Shroom Burger?
Yes, here are your customization options:
Change Your Bun Style
Lettuce Wrap (No Bun): -180 cals
Add or Swap Ingredients
Sliced Onions: +5 cals
Pickle: +5 cals
Cherry Peppers: +$0.49 (10 cals)
Bacon: +$1.99 (70 cals)
Crispy Onions: +$1.29 (0 cals)
Side of ShackSauce: +0 cals
Best Toppings for a ‘Shroom Burger Experience
Take this burger to another level with:
Crispy Onions for crunch
Cherry Peppers for heat
Sliced Onions for boldness
Pickles for tang
Extra ShackSauce for indulgence
When Is It Available?
The ‘Shroom Burger is a year-round menu item and available at all Shake Shack locations.
Is It Vegetarian?
Yes, the ‘Shroom Burger is 100% vegetarian. It does contain dairy and eggs, so it’s not vegan.
Best Pairs with Other Shake Shack Menu Items
Menu Item
Price
Calories
Crinkle-Cut Fries
$3.29
470 cal
Cheese Fries
$4.29
600 cal
Shack-made Lemonade
$3.79
160 cal
Black & White Shake
$5.29
760 cal
Fifty/Fifty Drink
$3.49
120 cal
Chicken Bites (6 pc)
$5.89
300 cal
Vanilla Custard Cup
$4.29
210 cal
Shack Hot Dog
$4.59
410 cal
Veggie Shack™
$9.49
630 cal
FAQs About the Shake Shack ‘Shroom Burger
Frequently Asked Questions
What is the ‘Shroom Burger made of?
It features a crisp-fried portobello mushroom filled with melted muenster and cheddar cheese, topped with lettuce, tomato, and ShackSauce.
Is it vegetarian?
Yes, it’s fully vegetarian. No meat is used in the burger.
How many calories does it have?
It contains approximately 510 calories.
What allergens are in it?
Milk, wheat, egg, soy, sesame, and gluten.
Can I make it vegan?
Not easily. The cheese and ShackSauce both contain dairy and egg.
Is it spicy?
No, but you can add cherry peppers for heat.
Can I order it with no cheese?
Technically, yes—but the cheese is inside the mushroom, so it can’t be fully removed.
What bun does it use?
A toasted Martin’s potato bun.
Can I get it with a lettuce wrap?
Yes, you can substitute the bun to reduce carbs and calories.
Can I add bacon?
Yes, for an additional $1.99 and 70 calories.
Can I add ShackSauce on the side?
Yes, it’s available at no extra cost.
What does it pair well with?
Fries, lemonade, and vanilla custard are popular options.
Is it available all year?
Yes, it’s part of the core Shake Shack menu.
Can I customize the toppings?
Yes—add or remove toppings like pickles, onions, or cherry peppers.
