Description
This protein packed keto casserole captures all the iconic flavors of a Philly cheesesteak—tender beef, melty cheese, and savory peppers and onions—without the carb-heavy bread. It’s a rich, cheesy, protein-packed meal that fits right into your health goals.
Ingredients
Scale
- 1.5 lbs thinly sliced beef steak (such as sirloin or ribeye)
- 1 large green bell pepper, thinly sliced
- 1 medium onion, thinly sliced
- 8 oz sliced mushrooms
- 2 cloves garlic, minced
- 1 cup beef broth
- 1 cup heavy cream
- 2 cups shredded provolone cheese
- 1 cup shredded mozzarella cheese
- 2 tbsp olive oil or avocado oil
- 1 tsp Worcestershire sauce
- 1/2 tsp smoked paprika
- Salt and black pepper to taste
- Fresh parsley for garnish (optional)
Instructions
- Preheat your oven to 375°F (190°C). While it heats, slice your bell pepper, onion, and mushrooms into thin, even strips. Thinly slice the beef against the grain for maximum tenderness.
- Heat olive oil in a large, oven-safe skillet over medium heat. Add the sliced peppers, onions, and mushrooms, and sauté until they begin to soften and develop a little color, about 5-7 minutes. Stir in the minced garlic and cook for another minute until fragrant.
- Push the vegetables to one side of the skillet and add the sliced beef in a single layer. Season with salt, pepper, and smoked paprika. Cook for 2-3 minutes per side until browned but not overcooked.
- Pour in the beef broth, heavy cream, and Worcestershire sauce. Stir everything together, scraping up any browned bits from the bottom of the pan. Let the mixture simmer for 2-3 minutes to slightly thicken.
- Sprinkle the shredded provolone and mozzarella cheeses evenly over the top of the beef and vegetable mixture. Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until the cheese is melted, bubbly, and lightly golden.
- Remove the casserole from the oven and let it rest for 5 minutes before serving. This allows the sauce to thicken slightly and makes serving easier. Garnish with fresh parsley if desired.
Notes
Leftovers can be stored in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave or the entire casserole in the oven at 350°F until warmed through. This dish also freezes well—wrap tightly or store in a freezer-safe container for up to 3 months.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Main Course
- Method: Baked
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 485
- Sugar: 3g
- Sodium: 580mg
- Fat: 35g
- Saturated Fat: 18g
- Unsaturated Fat: 12g
- Trans Fat: 0g
- Carbohydrates: 6g
- Fiber: 1g
- Protein: 38g
- Cholesterol: 125mg