Vegan Mushroom and onion sandwich

This vegan Mushroom and onion sandwich is super easy to make and is delicious. It is one of the recipes that you learn by heart, and it is always perfect for the days you have no idea what to eat for lunch or dinner.

Vegan mushroom and onion sanwhich

About the mushroom sandwich

Imagine the vegan version without the broth if you like the French Dip sandwich. I don’t add broth because I’m not too fond of the texture of wet bread, but if you don’t mind it, you can make a straightforward one with vegetable broth (affiliate link) and soy sauce or eat it with an onion soup-type broth.

But really, this vegan mushroom sandwich recipe has so much flavor; you don’t need anything else. Serve it with a good salad on the side, and you will see what a delicious lunch/dinner you will have.

Ingredients to prepare a vegan and mushroom sandwich

Ingredients to make a vegan mushroom sandwich

  • Which Mushroom is best for this sandwich? I like this sandwich best by using a mix of several mushrooms; cremini, whites, and shiitake. You can use Portobello mushrooms, cremini, or white mushrooms. You can even use oyster mushrooms or make your mushroom mix.
  • Onion. Slice the onion thinly and evenly. This will help all onions caramelize evenly, and each bite tastes delicious.
  • Soy sauce, olive oil, and sliced garlic. If you don’t have garlic, you can use garlic powder.
  • French bread or baguette. It is also delicious if you make it with homemade bread.
  • Vegan smoked cheese. This is optional, but I feel it complements the sandwich pretty well. Use whatever vegan cheese you like the most. I used gouda from the Whole Foods brand. Make this nacho cheese recipe if you can’t get a good vegan cheese.

How to make a vegan mushroom sandwich?

It takes two simple steps:

  1. In a frying pan, add the olive oil, onions, and mushrooms with the garlic to caramelize until they become deliciously golden brown. Add the soy sauce to it.
  2. Put the mixture on a piece of French bread, put the cheese on top, and put it in the oven to melt. You can also grill the sandwich instead.
Mix of mushrooms, onion  and seasoning for a perfect mushroom sandwich.
Vegan mushroom and onion sandwich without cheese

Tips & tricks to make the best sandwich

  • Please eat the sandwiches immediately; if you leave them for a long time, the filling can make the bread soggy.
  • You can also add mustard, vegan mayo, pickles, jalapeños, avocado, lettuce, tomatoes, etc.
  • To melt the cheese and heat them, you can put them in the oven in the broiler function or put them in the toaster oven. I also love grilling the sandwiches.
  • If you will make them with loaf bread or slices of homemade bread, heat them on a griddle (affiliate link) or frying pan with a bit of oil or vegan butter.
  • Serve with a simple vinaigrette salad or the raw broccoli apple salad.
Grabbing a halved vegan sandwich

Here is the recipe for these mushroom and onion sandwiches; I hope you like them a lot and they become one of your favorite light dinners or vegan dinners. When you make the recipe, please take a picture of it and post it on Instagram or FB for all of us to see. If you are going to do it later, then save it on Pinterest.

It would also be incredible to give it five stars and tell me how it went in the comments section; if you have doubts or ideas, put them there.

vegan mushroom sandwich recipes,mushroom sandwich vegan,vegan mushroom and onion sandwich

Vegan mushroom and onion sandwich

Alejandra Graf
This mushroom and onion sandwich is super easy to make and is delicious. It is one of the recipes that you learn by heart and it always turns out delicious on days you are in a hurry or don’t know what to eat for dinner or lunch.
5 de 1 voto
Prep Time 10 mins
Cook Time 20 mins
0 mins
Total Time 30 mins
Course sandwich
Cuisine American
Servings 4 servings
Calories 228 kcal


  • 3 tablespoons olive oil
  • 32 oz mushrooms cremini, Portobello, or a mix
  • 1 large onion sliced
  • 2 cloves garlic sliced
  • 2 tablespoons soy sauce
  • pinch salt
  • freshly ground black pepper


  • 4 pieces French bread
  • 4 slices vegan cheese


  • In a frying pan put the olive oil and turn on the heat over medium heat, leave for a minute. Put the sliced ​​mushrooms, onion, and garlic and sauté for 5-7 minutes or until the onion is transparent and the mushrooms are well cooked.
  • Add the soy sauce, a pinch of salt, and black pepper to taste. Leave until all the liquid has been absorbed.
  • To prepare the sandwiches, cut the bread in the center without reaching the other side, fill it with the mushroom and onion mixture. Put a slice of cheese on top and put it in the oven or toaster oven to melt the cheese.


Calories: 228kcalCarbohydrates: 17gProtein: 9gFat: 16gSaturated Fat: 3gSodium: 721mgPotassium: 788mgFiber: 4gSugar: 6gVitamin A: 1IUVitamin C: 7mgCalcium: 32mgIron: 2mg
Keyword portobello, pulled vegan mushroom sandwich


Nutritional information of this recipe is only an estimate, the accuracy for any recipe on this site is not guaranteed.

Did you make this recipe?Tag @piloncilloyvainilla on Instagram and hashtag it #alecooks so we can all see your creations.
Latest posts by Alejandra Graf (see all)

Notify of
Recipe Rating

Inline Feedbacks
View all comments





Would love your thoughts, please comment.x