Easy Keto Philly Cheesesteak Casserole 🥩🧀

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This Keto Philly Cheesesteak Casserole captures all the classic flavors of a Philly cheesesteak—savory beef, sautéed peppers, onions, mushrooms, and plenty of melted cheese—without the bread. It’s a low-carb, high-protein comfort meal perfect for busy weeknights.

Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 6

Ingredients

• 2 lbs (900 g) ground beef (or thinly sliced steak)
• 2 tbsp butter or olive oil
• 1 medium onion, sliced
• 1 green bell pepper, sliced
• 1 red bell pepper, sliced
• 8 oz (225 g) mushrooms, sliced
• 3 cloves garlic, minced
• 1 tsp Worcestershire sauce
• 1 tsp Italian seasoning
• 1 tsp smoked paprika
• 1 tsp salt
• ½ tsp black pepper
• 4 oz (115 g) cream cheese, softened
• ½ cup heavy cream
• 1½ cups shredded provolone cheese
• 1 cup shredded mozzarella cheese
• ¼ cup grated Parmesan cheese (optional)

Instructions

1. Preheat oven.
   • Heat oven to 375°F (190°C).
   • Grease a 9×13-inch baking dish.
2. Cook the vegetables.
   • Heat butter or oil in a large skillet.
   • Add onions, peppers, and mushrooms.
   • Cook for 5–7 minutes until softened.
   • Add garlic and cook for 30 seconds.
3. Brown the beef.
   • Add ground beef to the skillet.
   • Cook until browned and fully cooked.
   • Drain excess fat if needed.
4. Season the filling.
   • Stir in Worcestershire sauce, Italian seasoning, smoked paprika, salt, and pepper.
5. Make it creamy.
   • Reduce heat to low.
   • Add cream cheese and heavy cream.
   • Stir until smooth and combined.
6. Assemble the casserole.
   • Transfer the mixture to the baking dish.
   • Top with provolone, mozzarella, and Parmesan cheese.
7. Bake.
   • Bake for 15–20 minutes until the cheese is melted, bubbly, and golden.
8. Rest and serve.
   • Let cool for 5 minutes before serving.

Optional Add-Ins

• 🥓 Crispy bacon pieces
• 🌶️ Jalapeños for heat
• 🧅 Caramelized onions for sweetness
• 🥬 Spinach for extra vegetables
• 🧀 Cheez Whiz-style sauce for a more classic Philly flavor

Serving Suggestions (Keto-Friendly)

• Cauliflower mash
• Roasted broccoli
• Side salad
• Zucchini noodles
• Lettuce wraps

Storage

• Refrigerator: Up to 4 days in an airtight container.
• Freezer: Up to 3 months (freeze before adding toppings for best texture).
• Reheat: Microwave or warm in the oven until heated through.

Tips for the Best Keto Philly Cheesesteak Casserole

• For authentic flavor, use thinly sliced ribeye steak instead of ground beef.
• Don’t overcook the peppers—keeping some texture makes the dish better.
• A mix of provolone and mozzarella gives the best cheesesteak-style melt.

This casserole is creamy, cheesy, savory, and satisfying—a keto-friendly version of a classic Philly favorite! 🥩🫑🧀