Portobello "Philly Cheese Steak" Sandwich


Cheese steaks are a Philadelphia tradition: thin slices from a rich and very fatty slab of beef, fried up and topped with a heavy cheese sauce. We've cut down on the fat considerably--but not on the taste. All it needs is a cold beer or a glass of pinot noir on the side.

Portobello "Philly Cheese Steak" Sandwich
Cook Time:
25 mins
Total Time:
25 mins
4 sandwiches


  • 2 teaspoons extra-virgin olive oil

  • 1 medium onion, sliced

  • 4 large portobello mushrooms, stems and gills removed (see Tip), sliced

  • 1 large red bell pepper, thinly sliced

  • 2 tablespoons minced fresh oregano, or 2 teaspoons dried

  • ½ teaspoon freshly ground pepper

  • 1 tablespoon all-purpose flour

  • 1/4 cup vegetable broth, or reduced-sodium chicken broth

  • 1 tablespoon reduced-sodium soy sauce

  • 3 ounces thinly sliced reduced-fat provolone cheese

  • 4 whole-wheat buns, split and toasted


  1. Heat oil in a large nonstick skillet over medium-high heat. Add onion and cook, stirring often, until soft and beginning to brown, 2 to 3 minutes. Add mushrooms, bell pepper, oregano and pepper and cook, stirring often, until the vegetables are wilted and soft, about 7 minutes.

  2. Reduce heat to low; sprinkle the vegetables with flour and stir to coat. Stir in broth and soy sauce; bring to a simmer. Remove from the heat, lay cheese slices on top of the vegetables, cover and let stand until melted, 1 to 2 minutes.

  3. Divide the mixture into 4 portions with a spatula, leaving the melted cheese layer on top. Scoop a portion onto each toasted bun and serve immediately.


Tip: The dark gills found on the underside of a portobello are edible, but if you like you can scrape them off with a spoon.

Nutrition Facts (per serving)

258 Calories
9g Fat
35g Carbs
12g Protein
Nutrition Facts
Servings Per Recipe 4
Serving Size 1 bun and 3/4 cup vegetable mixture
Calories 258
% Daily Value *
Total Carbohydrate 35g 13%
Dietary Fiber 6g 21%
Total Sugars 8g
Added Sugars 3g 6%
Protein 12g 25%
Total Fat 9g 11%
Saturated Fat 3g 16%
Cholesterol 12mg 4%
Vitamin A 1440IU 29%
Vitamin C 57mg 63%
Folate 64mcg 16%
Sodium 537mg 23%
Calcium 234mg 18%
Iron 2mg 12%
Magnesium 54mg 13%
Potassium 708mg 15%

Nutrition information is calculated by a registered dietitian using an ingredient database but should be considered an estimate.

* Daily Values (DVs) are the recommended amounts of nutrients to consume each day. Percent Daily Value (%DV) found on nutrition labels tells you how much a serving of a particular food or recipe contributes to each of those total recommended amounts. Per the Food and Drug Administration (FDA), the daily value is based on a standard 2,000 calorie diet. Depending on your calorie needs or if you have a health condition, you may need more or less of particular nutrients. (For example, it’s recommended that people following a heart-healthy diet eat less sodium on a daily basis compared to those following a standard diet.)

(-) Information is not currently available for this nutrient. If you are following a special diet for medical reasons, be sure to consult with your primary care provider or a registered dietitian to better understand your personal nutrition needs.

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