20 Minute Philly Cheesesteak Stuffed Portobello
- Jun 30, 2025
- 1 min read
Updated: Aug 6

Seared sliced steak or ground beef and bell peppers stuffed into a portobello mushroom, topped with cheese and baked until bubbly.
Yield: 2 servings
Total Time: 20 minutes
Prep Time: 10 minutes
Per Serving: 1 Lean, 3 Green, 3 Condiments
Ingredients:
2 portobello mushrooms, about 3 to 4 inches in diameter
Cooking Spray
10 oz sirloin steak, frozen for 20 minutes then thinly sliced
1 tsp dried oregano
¼ tsp salt
4 tbsp sliced onion
1 cup sliced green bell pepper
1 cup sliced red bell pepper
2, (1-oz.) slices reduced fat provolone cheese
Directions:
Preheat oven to 400°F.
Arrange mushrooms on a baking sheet, gills side up. Bake for 7 to 10 minutes. Pat the mushrooms with paper towels to dry.
Heat a skillet over medium heat. Spray with cooking spray and add the steak. Season with salt and oregano and sauté for 2 minutes. Transfer to a plate.
Spray the same skillet again with cooking spray. Add the onion and peppers and sauté until browning around the edges, about 5 minutes. Return the steak, give it a toss and remove from heat.
Fill mushroom caps with the filling. Place provolone slices on top.
Broil for 2 to 3 minutes until the provolone starts to melt and brown.
Nutrition Facts Per Serving: 350 calories, 15g fat, 11g carbohydrate, 41g protein




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