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You are here: Home / Dinner / The Best Portobello Mushroom Burgers with Quick Caramelized Onions

The Best Portobello Mushroom Burgers with Quick Caramelized Onions

July 1, 2018 by Christal

Portobello mushroom burger with caramelized onions and dairy-free cheese on a gluten-free bun | Nutrition in the Kitch-1

A Tasty Vegan Portobello Mushroom Burger Recipe!

First of all, Happy Canada Day to all my fellow Canucks! I hope you are thoroughly enjoying your long weekend. We are enjoying our time out at the lake, sipping wine, cruising on the boat, and grilling up burgers! Speaking of burgers…I’ve always been a big fan. Not of fast-food burgers but hearty, homemade (or good restaurant) burgers made a little healthier with all sorts of tasty toppings just like these Portobello Mushroom Burgers with Quick Caramelized Onions. They seriously are “the best”!

Portobello mushroom burger with caramelized onions and dairy-free cheese on a gluten-free bun | Nutrition in the Kitch-2

While I love veggie burgers I’ve always leaned towards those that are made with a mixture of rice, beans, and vegetables. The year I started NITK I made these exact portobello mushroom burgers and at the time I wasn’t sure that just a mushroom itself could really be substantial enough to stand in for a burger patty whether it be veggie, chicken, turkey, or beef.

Portobello mushroom burger with caramelized onions and dairy-free cheese on a gluten-free bun | Nutrition in the Kitch-3

I was pleasantly surprised when I discovered that portobello mushrooms are in fact a perfect burger stand in. If you are a skeptic, just drool over these pictures and put my recipe to the test!

Interestingly when portobello mushrooms are marinated and grilled, then topped with a bunch of delicious ingredients and stuffed in a bun, they barely taste like a mushroom, but rather have a great meaty consistency and wonderful flavor!

Portobello mushroom burger with caramelized onions and dairy-free cheese on a gluten-free bun | Nutrition in the Kitch-4

Some Portobello Mushroom Nutrition facts for you….

Portobello mushrooms are a great source of nutrients including selenium and potassium and still contain 5 grams of protein and 3 grams of fiber (in a 1 cup serving). While low in calories these little mushrooms still have a meaty texture and are quite filling. Along with selenium and potassium they also contain B vitamins, potassium, and copper! 

Along with the mushroom I chose to add quick caramelized onions and cashew nut cheese as complimentary burger toppings along with crunchy cabbage, juicy tomato, and crisp lettuce. The combination is stellar. Tangy sweetness from the onions and creaminess from the cashew cheese compliment the meaty portobello perfectly.

 

 

Portobello mushroom burger with caramelized onions and dairy-free cheese on a gluten-free bun | Nutrition in the Kitch-5

I’m not going to lie, it was slight torture trying to get through taking these pictures without biting into this juicy, flavorful, stack of deliciousness.

Have you made portobello mushroom burgers before? What’s your favourite kind of veggie burger stand-in? I’d love to read about it in the comments below! 

5.0 from 3 reviews
Portobello Mushroom Burgers with Quick Caramelized Onions
 
Print
Prep time
10 mins
Cook time
20 mins
Total time
30 mins
 
Serves: 4
Ingredients
  • 4 portobello mushrooms, stems removed
  • 2 tbsp balsamic vinegar
  • 1 tbsp olive oil
  • 1 cup sliced sweet white onion
  • 1 tablespoon coconut palm sugar
  • ¼ tsp baking soda
  • 4 tablespoons cashew cheese or goat cheese (I used local Truffula Cashew Cheese)
  • ¼ cup thinly sliced red cabbage
  • 1 large tomato, sliced
  • 2 cups mixed greens lettuce
  • 4 tsp Dijon mustard
  • 4 gluten-free burger buns or your favourite burger buns
Instructions
  1. Preheat the grill.
  2. Take a large ziploc, and place mushrooms in the bag, add the balsamic vinegar and 1 tablespoon of olive oil, and seal bag. Shake the bag until the mushrooms are coated in the vinegar and oil. Let sit for a few minutes while preparing the other ingredients.
  3. Heat a non stick pan over med-high heat add in the sliced onions and coconut palm sugar, toss to coat the onions with the sugar, then add in the baking soda and toss to coat again.
  4. Lower heat to medium, and cook the onions, stirring often until they are soft and browned, about 10 minutes.
  5. Remove mushrooms from ziploc and place on the heated grill, rounded side up. Let cook for 3-4 minutes.
  6. Meanwhile, slice tomato, cabbage, and wash lettuce, and prepare any other preferred garnishes.
  7. Turn mushrooms over so they are flat side up and top the inside of the mushrooms with the caramelized onions and bits of the cashew or goat cheese.
  8. Continue to cook for 3 more minutes then remove from grill.
  9. Using your favourite gluten-free buns assemble burgers starting with the dijon mustard, then top with the mushroom filled with onions and cheese, then top with the cabbage, tomato, lettuce, and th other half of the bun.
  10. Enjoy!
Notes
Don't want the bun? These would be great just as a "stack", no bun needed! 🙂
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Enjoy the rest of your Sunday and be sure to pin the photo below so you can make this recipe later!

Portobello mushroom burger with caramelized onions and dairy-free cheese on a gluten-free bun | Nutrition in the Kitch-6Christal // NITK 

 

Filed Under: Dairy Free, Dinner, Gluten Free, Lunch, Main Dishes, Vegetarian, Wraps/Sandwiches Tagged With: burgers, dairy free, dinner, gluten free, healthy, lunch, mushroom, portobello, vegan, vegetarian

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Comments

  1. KaleyIJalomo says

    September 17, 2016 at 9:08 pm

    I blog frequently and I truly appreciate your information. Your article
    has truly peaked my interest. I’m going to take a note of your blog and keep checking for new details about once a week.
    I subscribed to your Feed as well.

  2. Summer says

    June 18, 2013 at 7:59 pm

    This was amazing! Thanks Christal!

    • Christal says

      June 18, 2013 at 8:41 pm

      Glad you enjoyed it Summer! 🙂

  3. Pooja Arora says

    October 3, 2012 at 1:49 am

    It’s nearly impossible to find well-informed people for this subject, but you seem like you know what you’re talking about! Thanks site now 😉

  4. Mushrooms Canada says

    September 12, 2012 at 12:21 pm

    Welcome to the delicious world of Portabella Burgers!! Thanks for sharing…

    -Shannon

    • Christal says

      September 12, 2012 at 9:29 pm

      I am so happy I’ve gone there! 🙂

  5. jenn says

    September 7, 2012 at 6:44 pm

    hi christal,
    can these mushrooms also be done on the stove in a pan or just on the grill?!
    thanks
    i can’t wait to try this. looks so yummy :0)

    • Christal says

      September 7, 2012 at 8:04 pm

      You could do them in a pan for sure! I would do a covered pan though, or you could bake them in the oven as well – I would suggest 350 for about 8 mins!

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