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Grilled Portobello Sandwich

balsamic onion, smoked gouda, roasted potatoes
4.5 stars
(1173 reviews)
  • Vegetarian
  • No Nuts Added
Grilled portobello mushroom, balsamic roasted red onion, smoked Gouda cheese, and arugula served on a soft bun slathered with a rosemary aioli. It's one step up from a veggie burger. And, of course, you get to assemble it to your own taste. Served with roasted Yukon Gold steak fries flavored with earthy rosemary.
Ingredients
  • White potatoes
  • Portabella Mushrooms
  • Hamburger Bun
  • Gouda Cheese
  • Red Onion
  • Mayonaise (canola oil, water, white distilled vinegar, 2% or less of the following: spice, salt, sugar, lemon juice concentrate, modified food starch, modified food starch, pea protein, fruit and vegetable juice (color), xanthan gum, calcium chloride)
  • Arugula
  • Balsamic vinegar
  • Parsley
  • Canola oil
  • Lemon juice
  • Olive Oil
  • Lemons
  • Rosemary
  • Sesame Seeds
  • Garlic
  • Kosher Salt
  • Black pepper
Nutrition
Servings Per Container: 1.0
Amount Per Serving*
Calories 900
Total Fat 50g
Saturated Fat 13g
Trans Fat 0g
Cholesterol 65mg
Sodium 1440mg
Total Carbs 81g
Dietary Fiber 9g
Sugars 15g
Protein 29g
*Our nutrition data includes all sauces, dressings, condiments, and garnishes included with a dish. If you have specific concerns about sodium, fat, or overall calories, know that we often serve these items on the side so you can add them to taste or leave them out, if you like.

What People Are Saying

5 Stars
Wonderful. Huge delicious perfectly cooked portobello which heated up just right in the microwave with the cheese on top and perfectly seasoned potatoes on the side. Tasty sauce and plenty of fresh greens on a soft easily heated bun.
5 Stars
Delicious.
4 Stars
The bun was day old.
5 Stars
This was my first time ordering from Munchery and I am absolutely in love. This sandwich is amazing! I love the alioi and the potatoes too. The mushroom is huge and well seasoned
5 Stars
One of my absolute favorites!
4 Stars
great sandwich. Side was not good. Used microwave directions with toaster oven for bread.
4 Stars
Would've preferred large leaves of lettuce. Messy eating but tasty. May order again???
5 Stars
Super tasty! I would have liked if the potato portion was larger, as my boyfriend and I split this meal. The mushroom/onion combo was great! We loved the mushroom, I loved the onions, aioli was tasty and overall the dish was nicely herbaceous!
5 Stars
Never had one before ... Amazed at how much it really does give off that burger *feel* without being a burger. I skipped the aioli mayo since I'm not a fan of mayo, and used Dijon mustard instead. So soo good
5 Stars
Very close to my favorite item.. The mushroom tastes like steak.. The dressing is perfect with the grilled onions and the brioche bun! Wish it were offered more
5 Stars
One of my favorite Munchery meals. So tasty and indulgent without being heavy.
2 Stars
flavorless mushroom + boring potato
4 Stars
pretty good! filling & tasty
4 Stars
Eetzfxdrdzr
1 Stars
Awful. Mushroom was tough. Didn't even eat half Potatoes had odd flavor.
5 Stars
Delicious
5 Stars
Delicious!
5 Stars
Absolutely delicious! Perfectly balanced and easy to prepare
5 Stars
This really doesn't get any better.
5 Stars
Yum!!!
3 Stars
Be forewarned - it looks like you get two portabello mushrooms in the picture of this burger - but there is actually only one, which is disappointing...
5 Stars
First time having a mushroom burger - wasn't sure what to expect, but I was pleasantly surprised at how great it was! I would definitely order again.
4 Stars
I love this dish but wish it was served with a whole grain bun instead of white.
5 Stars
Delicious!
5 Stars
Very nice work
5 Stars
I order this every time I see it on the menu. Love it!!
4 Stars
Photo shows two mushrooms, however our delivery only had one.
5 Stars
Really delicious! Totally surprised. Will order again!
5 Stars
Wonderful! As remembered..,great flavor found Carmelites onions beneath portobello and cheese..,succulent! Great sauce! Please have it on menu often
5 Stars
Delicious!
5 Stars
Very good. Great flavors.
4 Stars
This was a damn good sandwich. I keep being impressed with Steven Levine's entrees - don't know how you do it, man, but PLEASE keep doing it!
4 Stars
Overall pretty good. The caramelized onions made the dish. Ours didn't have blue cheese but some Gouda we think. Whatever it was, it was better than blue cheese.
5 Stars
Best sandwich ever!!
5 Stars
So flavorful!
5 Stars
Super good veggie burger!!!
2 Stars
Photo shows two mushroom caps and I only received one. Good taste, however.
5 Stars
Best thing I've ever eaten from Munchery... didn't even need the aoili! Hope to order again!!
5 Stars
So delicious and flavorful!
3 Stars
Normally my favorite Munchery dish, but it seemed off that night. The portobello wasn't marinated enough and was pretty bland.
4 Stars
An okay sandwich. Nothing to brag about. Probably would not order again.
5 Stars
Yum, yum, yum! That's all I kept mumbling as I ate. Absolutely perfect in every way. Loved the balsamic grilled onions, aoili, & perfectly grilled portobellos. Mildly salty roasted potatoes were a perfect side. Would happily eat this every week!
5 Stars
Yummy and healthy!
5 Stars
Scrumptious perfection!
5 Stars
Absolutely delicious!
5 Stars
It was tight
4 Stars
Very very good
5 Stars
The potatoes were dry but the sandwich was soooooo good! I made it into two open-face sandwiches and it was very filling.
5 Stars
Perfectly delicious, flavorful and filling! I'll definitely be having this again.
5 Stars
Oh my umami goodness! Vegetarian, yet more flavorful and satisfying than any burger I've ever had. Even my carnivorous partner raved about it.
4 Stars
Yummy. Good flavors. Onions and shrooms were tasty. Fresh roll. Arugula and aioli topped it off. Surprises papas re- heated well but those were good too
3 Stars
Sandwich was skimpy... One 3-inch wide, very flattened mushroom, not like the picture. Tasted good, but less bun, more shroom would improve this dish.
1 Stars
Nope
5 Stars
This was so delicious but I dropped it I hope to have it again someday
4 Stars
"4 and three quarter stars"-Ed Mcmahon
5 Stars
Excellent dish..one of my absolute favourites..try it..you will not be disappointed..
5 Stars
One of THE BEST.
5 Stars
Delicious! Very tasty, would definitely order again.
5 Stars
Really tasty and filling!
5 Stars
Delicious and hearty. Loved it. The burger was a bit sloppy bc the mushroom is slippery so the sandwich falls apart. But it's fun to eat and yummy. Love the fries that go with it as well.
3 Stars
Smaller mushrooms this time. Substantially
5 Stars
This is a huge burger, and the sauce was good with the mushrooms.
4 Stars
Unfortunately the aioli was missing from the box. Killer sandwich though.
5 Stars
My favorite!
5 Stars
Probably the best thing I had from Munchery!
5 Stars
Pretty much my favorite thing on the menu. YUM.
4 Stars
Really good. Had it twice and loved it both times. Mushrooms + Munster + aioli is great. Plus the papas have been good As well.
5 Stars
Currently my favorite item on the menu.
4 Stars
Tasted good, but portobellos as the "patty" made it tricky to eat...turned into a bit of a mess as the burger wouldn't hold together. Still enjoyed it though.
4 Stars
Delicious, but only came with one mushroom, not two as shown in the picture.
5 Stars
Wow. That sandwich was like a VERY good restaurant sandwich, and all I did was toast the buns and microwave the rest. Couldn't be easier or more delicious. Can't wait to order my next Munchery dinner!
5 Stars
Definitely would order again. This was my second time ordering this dish and was much more satisfied then I was the first time around.
5 Stars
Great flavor!
5 Stars
yummmmm this was so delicious! the aoili was divine and everything reheated perfectly.
1 Stars
Never delivered.
5 Stars
Yummy!!!!! So smoky. Good flavor
5 Stars
Super good. Aioli was amazing.
2 Stars
Be better of sauteing the onions in good ol' butter...
4 Stars
A little greasy, but quite tasty and filling!
5 Stars
All good. Warm, juicy, flavorful - better than most beef burgers.
5 Stars
Great tasting burger that comes in good portion size. As a mushroom lover this was obviously great, but even my daughter and wife who are meh about mushrooms loved it.
4 Stars
The picture showing two mushrooms is misleading as the sandwich comes with one mushroom. I though the cheese was a bit overpowering and would probably remove one of the slices if I ordered this again. Loved the rosemary mayo and potatoes.
4 Stars
This was really good! Loads of portobello and cheese. Great flavors.
5 Stars
Delicious, filling.
5 Stars
Delicious vegetarian option
4 Stars
Good size portion of well seasoned mushroom accompanied by delicious potatoes.
5 Stars
Can I give this 6 stars? Chef Levine you've done it again. This was the most amazing sandwich! I toasted the bun and microwaved the rest to warm it up and put it together. Perfection. Who needs meat when you have something this "meaty"? Delish!
5 Stars
Wonderful sandwich..perfect combination of grilled portobello(tasted like steak!) smoked Gouda cheese., delicious sautéed sweet onions and a wonderful aioli to spread on bun,the flavor so were perfect! Delicious!
5 Stars
Awesome. Absolutely awesome.
5 Stars
Amazing! Everything comes separated in the package also so not soggy!
5 Stars
Best thing I've had yet by far!
1 Stars
I would not recommend this. The mushrooms had too much marinade on them, I took one bite and couldn't eat the rest. Sometimes less is more, it didn't make such a healthy option taste healthy.
5 Stars
Loved this meal! It was hearty and very tasty. Flavors were excellent and it was easy to heat up in my toaster oven. Would definitely order it again!
3 Stars
Really tasty burger plenty of onions and fresh bun; however I found it too greasy.
4 Stars
So delicious! Onions and aioli with the mushrooms were very savory. Will definitely order again.
4 Stars
my favorite veggie sandwich has been the protein one with the sweet potato fries but this was tasty.
5 Stars
This might be my favorite thing I have ever eaten from Munchery. Completely delicious in every way.
5 Stars
I didn't think I'd like this as much as I did. Loved the creamy dressing and great ratio of Portobrlollo -9oops, portobello, to gouda to bun. Excellent. (sorry - having problems with my delete key)
5 Stars
Fabulous!!!! Deserves a 10
5 Stars
The portion is great, it is a well balanced and delicious dish!
5 Stars
Absolutely delicious! Portobello mushroom could have been bigger (mushroom in picture bigger then what I got).
5 Stars
If I could give this 10 stars, it's out of this world GOOD! Love the aioli, used the extra to dip the potatoes.
4 Stars
This was so delicious! Great flavor and because it was vegetarian, I felt better about having it for dinner. Only reason why it lost a star was because my arugula was rancid :(
5 Stars
"WAHOOOO!" THIS GRILLED PORTOBELLO SANDWICH IS WONDERFUL. I WISH CHEF LEVINE WOULD MAKE THESE EVERYDAY. EACH INGREDIENT ADDS ANOTHER DEPTH OF FLAVOR......HEAVEN IS THE END RESULT. DEFINITELY USE THE OVEN/TOASTER OVEN. brc
5 Stars
Yep! Use some better bread next time.... Grain bread or something
5 Stars
The best sandwich/burger I have ever had from Munchery. Amazing!!
5 Stars
One of my favorite dishes Munchery has offered, and we have been ordering from Munchery five nights out of seven since our daughter was born, a year ago. Good work!