Philly Portobello cheese steak sandwich

Philly Portobello Steak Sandwich

Quick, simple, healthy comfort food for those busy nights. This vegan Philly portobello "steak" sandwich is full of veggies, a touch of optional spice, and loads of flavor!

Course Main Course
Cuisine American
Keyword healthy philly sandwich, vegan philly steak sandwich
Prep Time 5 minutes
Cook Time 15 minutes
Total Time 20 minutes
Servings 6 servings
Calories 174 kcal
Author Sophia DeSantis


  • 4 Portobello mushrooms , de-stemmed
  • 1 small green bell pepper
  • 1 small red bell pepper
  • 2 cups fresh spinach
  • 1 sweet onion
  • 2 cherry bomb peppers , optional for spicy version
  • 1 teaspoon fresh chopped garlic , about 1 medium garlic clove
  • 1 tablespoon fresh parsley
  • Your favorite oil for sauteing veggies or veggie broth if not using oil
  • 2 tablespoons brown rice flour
  • Ā½ cup veggie broth , low sodium if needed
  • sea salt , to taste
  • ground black pepper , to taste
  • 6 hot dog buns or sub sandwich rolls of choice
US Customary - Metric


  1. Wash and thinly slice mushrooms, bell peppers, spinach, cherry bomb peppers and onion.

  2. Saute garlic in a pan using veggie broth (or oil) until lightly browned.

  3.  Add veggies and cook covered until mushrooms release some liquid.

  4. Add parsley, salt and pepper and mix well. Remove cover and add flour and veggie broth and continue to cook until juice thickens.
  5. Remove from heat and serve in buns. 

  6. Top with one of the creamy sauces or sliced cheese if you want an extra layer of creaminess. Also serves well with a side of green bean fries (made with using the Asparagus Fries recipe but sub green beans).

Recipe Notes

Tips to prep ahead

Baby/toddler food idea

Nutrition Facts
Philly Portobello Steak Sandwich
Amount Per Serving
Calories 174 Calories from Fat 27
% Daily Value*
Total Fat 3g 5%
Sodium 227mg 9%
Potassium 527mg 15%
Total Carbohydrates 32g 11%
Dietary Fiber 4g 16%
Sugars 9g
Protein 6g 12%
Vitamin A 36.6%
Vitamin C 84%
Calcium 6.7%
Iron 14.9%
* Percent Daily Values are based on a 2000 calorie diet.