Heat the olive oil in a large skillet over medium-high heat.
Add the diced onions and bell peppers, and cook until they are softened, about 3-4 minutes.
If using mushrooms, add them to the skillet and cook until they are tender.
Add the ground beef to the skillet, breaking it up with a spatula or wooden spoon, and cook until browned and fully cooked, about 5-7 minutes. Drain any excess fat.
Stir in the Worcestershire sauce, ketchup, Dijon mustard, and flour, and cook for an additional 1-2 minutes until the mixture is well combined.
Pour in the beef broth, reduce the heat to low, and let the mixture simmer for 5 minutes until thickened. Season with salt and pepper to taste.
Assemble the Sloppy Joes:
Preheat your oven's broiler.
Divide the beef mixture evenly among the toasted hamburger buns.
Top each with a slice of provolone cheese.
Place the assembled sandwiches under the broiler just until the cheese is melted and bubbly, about 1-2 minutes.
Serve:
Serve the Philly Cheesesteak Sloppy Joes hot with your favorite sides, such as fries or a salad.
Prep Time:
10 minutes
Cook Time:
20 minutes
Total Time:
30 minutes
Nutrition (Per Serving):
Calories: 450
Carbohydrates: 30g
Protein: 25g
Fat: 25g
Saturated Fat: 10g
Cholesterol: 80mg
Sodium: 800mg
Fiber: 2g
Sugar: 5g