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    Home » Recipes » Sandwiches, Wraps, and Burgers

    Published: Apr 12, 2017 · Modified: Sep 1, 2022 by Willow Moon · This post may contain affiliate links. · As an Amazon Associate I earn from qualifying purchases.

    Vegan Caramelized Onion and Mushroom Grilled Cheese

    Jump to Recipe Pin

    This rich, sweet, and savory Vegan Caramelized Onion and Mushroom Grilled Cheese is an easy meal. Caramelized onions elevate grilled vegan cheese to another level!

    Vegan Caramelized Onion and Mushroom Grilled Cheese on cutting board

    Caramelized onions are one of those ingredients that elevates any dish you add them to. Pairing them with hearty baby portobellos and rich vegan Swiss cheese is the perfect combination of flavors.

    This rich, sweet, and savory Vegan Caramelized Onion and Mushroom Grilled Cheese feels really indulgent. You may want to pair this with a glass of red wine.

    Normally I like to use vegan cheddar or vegan cream cheese for a grilled cheese sandwich. Sometimes I'll use vegan Mozzarella or vegan jalapeño Havarti.

    Using vegan Swiss cheese is a first for me. I was inspired to make this after making a Vegan Reuben and a Vegan Monte Cristo. They both needed Swiss to complete the recipe.

    I've found that using the same ingredients several times in different recipes throughout the week is an extremely efficient way to work. It's great for using up ingredients where you want to change it up each time you make a meal.

    Vegan Caramelized Onion and Mushroom Grilled Cheese close up

    Recipe

    This vegan grilled cheese is an indulgent meal.

    *Don't forget to come back and leave your feedback and star rating.

    Affiliate links below. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

    *Update since writing this: Thanks to a reader, the bread below is my new favorite bread. It is soft and fluffy like white bread.

    It is Northern Bakehouse millet chia bread. I highly recommend it.

    Millet chia bread

    📋 Recipe

    Vegan Caramelized Onion and Mushroom Grilled Cheese
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    5 from 3 votes

    Vegan Caramelized Onion and Mushroom Grilled Cheese

    This rich, sweet, and savory Vegan Caramelized Onion and Mushroom Grilled Cheese is an easy meal. Caramelized onions elevate grilled vegan cheese to another level!
    Course Main Course
    Cuisine American
    Prep Time 10 minutes minutes
    Cook Time 50 minutes minutes
    Total Time 1 hour hour
    Servings 2
    Calories 441kcal
    Author Willow Moon
    Prevent your screen from going dark

    Ingredients

    • 1 ½ cups sliced onion
    • 1  tablespoon olive oil
    • 2 teaspoons balsamic vinegar
    • 1 cup sliced baby portobello mushrooms
    • 2 teaspoons low sodium tamari
    • 4 slices gluten free bread - I used brown rice
    • 4 slices vegan Swiss cheese
    US Customary - Metric

    Instructions

    • Add olive oil to a hot pan. Add sliced onion and cook on medium heat for about 35-40 minutes, or until onions are caramelized. Add balsamic vinegar to deglaze the pan.
    • Add sliced mushroom and tamari, and cook until mushrooms are tender.
    • Place vegan Swiss cheese on bread. Broil or toast 3-5 minutes, until cheese is melted*.
    • Spoon caramelized onions and mushrooms on top of vegan Swiss.

    Notes

    You could also assemble sandwiches and cook them in a pan on medium high heat on both sides until the bread is golden brown. I prefer broiling the vegan cheese first, and then making the sandwiches because that way it is a little less messy.
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    Nutrition

    Calories: 441kcal | Carbohydrates: 54g | Protein: 7g | Fat: 20g | Saturated Fat: 3g | Cholesterol: 12mg | Sodium: 976mg | Potassium: 331mg | Fiber: 5g | Sugar: 11g | Vitamin A: 150IU | Vitamin C: 8.9mg | Calcium: 132mg | Iron: 1.3mg

    *Note: Nutrition information should be considered an estimate only. Different nutrition calculators give you different results.

    More Sandwiches, Wraps, and Burgers

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      Vegan Monte Cristo
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      Benedictine Tea Sandwiches
    • Vegan BLT with Avocado
      Vegan BLT with Avocado
    • Vegan Reuben Sandwich on a cutting board.
      Vegan Reuben Sandwich

    Reader Interactions

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      Recipe Rating




    1. Cindy says

      May 29, 2018 at 10:16 am

      I normally have a plain old grilled cheese, but this is my new favorite way to make one! Thanks for sharing!5 stars

      Reply
      • Willow Moon says

        May 30, 2018 at 9:50 am

        Thanks Cindy!

        Reply
    2. Chanel van Reenen says

      April 17, 2017 at 4:27 am

      these look so good! I love that their vegan and use a dairy free cheese. I have been trying to limit my dairy in take!

      Reply
    3. jessica says

      April 15, 2017 at 5:08 am

      a vegan and gluten free grilled cheese...yes please!!!!

      Reply
    4. Mira says

      April 14, 2017 at 1:28 pm

      I make the hubs vegan grilled cheese all the time. I use daiya mostly. I should try adding the shrooms though!

      Reply
      • Willow Moon says

        April 16, 2017 at 12:07 pm

        I used Daiya Swiss for this and really liked it. The caramelized onions and mushrooms really add a lot to the sandwich - you should try it!

        Reply
    5. Kate says

      April 14, 2017 at 11:03 am

      I have been vegetarian for over a year now and feel SO GOOD and I am honestly really flirting with veganism. One thing I have not yet fully embraced is vegan cheese, though. I tried one brand once and I didn't like it at all. My friends who are vegan then told me that was the worse tasting one out there! I will have to give it another chance. This sandwich looks delicious!

      Reply
      • Willow Moon says

        April 16, 2017 at 12:05 pm

        I was a vegetarian for a year before going vegan. Cheese was hard for me to cut out also. But after I did I couldn't stand the smell in the deli section, and I can't stand the smell of butter - it is worse than smelling meat cooking. I would definitely try different brands of vegan cheese. I like Follow Your Heart and a couple of the Daiya vegan cheeses. I have yet to try other brands. You could also look into making your own. I make my own Tofu Feta and Tofu Ricotta and love them.

        Reply

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    I've been vegan for 23 years and
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