Portabello Mushroom Caprese Burger Recipe

This Portabello Mushroom Caprese Burger is a great burger option for meat eaters if you are doing a vegetarian cookout and an all-time favorite vegetarian option.

Marinating the portabello with balsamic vinegar before grilling adds lots of flavor.  The of Caprese toppings of fresh mozzarella, tomato, and basil make this a satisfying vegetarian burger option.

One of my all-time favorites.



Caprese Portobello Mushroom Burger

Prep Time: 10 minutes
Cook Time: 10 minutes
Total Time: 20 minutes
Servings: 6
Calories: 415kcal
Author: Kelly DiMascio
This is by far my favorite vegetarian burger option.  For the nonvegetarians in the crowd try adding a couple of slices of crispy bacon to add amazing flavor.
Use your favorite pesto or make this easy homemade pesto.

Print Recipe


  • 1/3 cup extra-virgin olive oil
  • 1/3 cup balsamic vinegar
  • 1 T fresh garlic - finely minced
  • 1 T fresh basil - finely chopped
  • 12 slices Roma tomatoes
  • 12 leaves fresh basil
  • salt and pepper
  • 1/2 cup pesto sauce
  • 6 portobello mushroom - stem removed
  • 6 Italian rolls
  • 6 leaves romaine lettuce
  • 6 oz part skim mozzarella cheese - sliced thinly


  • Preheat grill to 400.
  • Mix EVOO, balsamic, minced garlic, and chopped basil.
  • Brush oil and vinegar mixture over portobello, season with salt and pepper to taste.
  • Let sit 10 minutes.
  • Spray or oil grill grates.
  • Cook portobellos over direct heat directly on the grates for about 2 to 3 minutes per side, until cooked through and tender but still firm and meaty.
  • Slice roll and heat on the grill
  • Spread pesto sauce on the bottom of each roll
  • Place portobello on the bottom of the roll.
  • Top portobello with 2 slices of fresh mozzarella, then 2 slices of Roma tomatoes and 2 basil leaves.
  • Add the top of the bun and serve hot.


Use your favorite pesto sauce or make an easy homemade pesto.


Calories: 415kcal | Carbohydrates: 31g | Protein: 13g | Fat: 26g | Saturated Fat: 6g | Cholesterol: 19mg | Sodium: 629mg | Potassium: 463mg | Fiber: 3g | Sugar: 5g | Vitamin A: 3085IU | Vitamin C: 2mg | Calcium: 314mg | Iron: 2.1mg
Did you love this recipe? Please Share!Mention @MermaidsandMojitos or tag #mermaidsandmojitos!

1 Comment

  1. Sean
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    This is a super fresh tasting change form burgers, really good!


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