Roasted Balsamic Portobello Tacos with Spicy Red Pepper Sauce

These tacos have balsamic marinated portobello mushroom slices, roasted veggies, crunchy red cabbage, and creamy spicy sweet and savory sauce! They're super easy to throw together on any weeknight!

Course Main Dish
Cuisine Gluten-Free, Mexican, Vegan
Keyword mushroom tacos, vegan taco recipe, vegan tacos
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings 15 tacos
Calories 117 kcal
Author Anjali Lalani


  • 15 corn tortillas , soft
  • 4 large portobello mushrooms , thinly sliced
  • 1 red bell pepper , thinly sliced and halved if too long
  • 1 green bell pepper , thinly sliced and halved if too long
  • 1 red onion , thinly sliced
  • mix of red/green cabbage , or just red cabbage, finely shredded
  • Spicy Roasted Red Bell Pepper Sauce
  • fresh cilantro , for garnish
  • sliced lemons , for garnish

For the Portobello Mushroom Marinade:

US Customary - Metric


  1. Combine all the ingredients for the marinate into a small bowl.
  2. Preheat the oven to 400 degrees. 

  3. Place the thinly sliced mushrooms in a mixing bowl, pour the marinate over the mushrooms, and toss well to combine. 

  4. While the oven is preheating, allow the mushrooms to marinate. Toss once more in between so that all of the mushroom slices are well coated.

  5. Once the oven is at 400 degrees, line a baking sheet with parchment paper and place each mushroom slice in a single layer on top. 

  6. Oven roast for 10-15 minutes. Once done, remove from the oven and set aside. In the meantime, continue to the next step.

  7. Heat a non-stick pan on medium heat. Add 1-2 teasp olive oil, and saute the thinly sliced red bell peppers, green bell peppers, and red onions on medium-high heat with a little salt and freshly ground black pepper. Mix frequently until all the veggies are completely sauteed and slightly charred. Set aside.

To Prepare the Tacos:

  1. Grill each corn tortilla on both sides in a non-stick pan.
  2. To make each taco, place a small amount of shredded red cabbage along the center, followed by some roasted veggies (red/green bell pepper + red onions), and 2-3 roasted portobello slices. Squeeze a tiny bit of lemon juice on top and garnish with some fresh cilantro. Finally drizzle a generous amount of Spicy Roasted Red Bell Pepper Sauce on top and devour!

Recipe Notes

Tips to Prep Ahead -


Kid-Friendly - You can omit the spice by simply omitting the jalapenos from the Spicy Roasted Red Bell Pepper Sauce.

Nutrition Facts
Roasted Balsamic Portobello Tacos with Spicy Red Pepper Sauce
Amount Per Serving
Calories 117 Calories from Fat 36
% Daily Value*
Fat 4g6%
Sodium 156mg7%
Potassium 211mg6%
Carbohydrates 18g6%
Fiber 2g8%
Sugar 3g3%
Protein 3g6%
Vitamin A 610IU12%
Vitamin C 34.2mg41%
Calcium 42mg4%
Iron 1.1mg6%
* Percent Daily Values are based on a 2000 calorie diet.