Growing up on the East Coast, Philly cheesesteaks were a Friday night tradition — greasy, cheesy, and totally unforgettable. But once I went keto, the bread had to go… not the flavor. That’s how this Keto Philly Cheesesteak Casserole was born — a rich, hearty dish that gives you all the savory satisfaction of a classic cheesesteak without the carbs.
Made with thinly sliced beef, sautéed peppers and onions, and a generous layer of melted provolone and cream cheese, this dish is pure keto comfort. It’s a one-pan wonder that’s weeknight-easy and dinner party-worthy. Even my non-keto family begs for seconds.
Why You’ll Love This Keto Casserole
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🔥 Low-Carb & High-Fat: Perfect for a ketogenic diet
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🧀 Rich & Cheesy: Layers of gooey provolone and cream cheese
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🥩 Protein-Packed: Thin steak slices keep you full for hours
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⏱️ Easy to Make: One pan, 30 minutes, and dinner is served
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🧑🍳 Family-Approved: No one misses the bread
Ingredients (Serves 4)
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1.5 lbs ribeye or sirloin steak, thinly sliced
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1 tbsp avocado oil or olive oil
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1 green bell pepper, thinly sliced
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1 red bell pepper, thinly sliced
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1 medium onion, thinly sliced
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2 cloves garlic, minced
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4 oz cream cheese, softened
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1 tbsp Worcestershire sauce
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1 tsp sea salt
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1/2 tsp black pepper
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1/2 tsp smoked paprika (optional)
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1 1/2 cups shredded mozzarella cheese
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6 slices provolone cheese
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Fresh parsley or chives, for garnish
Equipment Needed
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Large skillet or cast-iron pan
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Casserole dish (8×8 or 9×9)
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Wooden spoon or spatula
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Cutting board and knife
Step-by-Step Instructions
1. Preheat & Prep
Preheat your oven to 375°F (190°C). Grease your casserole dish with a little oil or butter.
2. Sear the Beef
In a large skillet over medium-high heat, sear the steak slices in avocado oil until browned but still slightly pink inside (about 2–3 minutes per side). Set aside.
3. Sauté Veggies
In the same skillet, add a touch more oil if needed. Sauté bell peppers and onions for 4–5 minutes until soft. Add garlic and cook for another 30 seconds.
4. Mix the Base
Lower the heat. Stir in cream cheese, Worcestershire, salt, pepper, and paprika. Let the cream cheese melt into the veggies. Add cooked steak back in and mix well.
5. Layer & Bake
Transfer everything into your casserole dish. Top with shredded mozzarella, then layer provolone slices over the top.
6. Bake It
Bake uncovered for 15–18 minutes until bubbly and the cheese is golden.
7. Garnish & Serve
Top with fresh herbs. Let it cool slightly before serving hot.
Nutrition (Per Serving)
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Calories: 510
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Protein: 40g
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Fat: 38g
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Net Carbs: 5g
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Total Carbs: 7g
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Fiber: 2g
Keto Cooking Tips
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Meat: Use shaved ribeye, roast beef, or even ground beef in a pinch.
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Peppers: Add poblano or banana peppers for extra kick.
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Cream Cheese Sub: Goat cheese or mascarpone for a unique flavor.
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Meal Prep: Make it ahead, refrigerate, and bake when ready.
Add-Ins & Variations
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🧄 Mushrooms: Sauté 1 cup sliced mushrooms with the peppers.
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🥓 Bacon: Add crumbled bacon for smoky crunch.
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🧅 Keto “Onion Rings”: Bake almond-flour coated onion rings for topping.
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🌶️ Spicy: Add jalapeños or crushed red pepper flakes.
What to Serve It With
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Cauliflower Rice: Soaks up all the cheesy sauce
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Keto Garlic Bread: Crunchy, cheesy low-carb sides
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Green Salad: Add freshness and fiber to balance the meal
Storage & Reheating
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Fridge: Store covered for up to 4 days
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Freezer: Freeze tightly wrapped for up to 2 months
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Reheat: Bake at 350°F for 10–12 minutes or microwave in 60-second bursts
Common Questions
Can I make this dairy-free?
Yes! Use dairy-free cream cheese (like Kite Hill) and vegan provolone-style cheese.
Can I use ground beef instead of steak?
Absolutely. Use 1.5 lbs of ground beef, brown it fully, and continue with the same steps.
Is this meal freezer-friendly?
Yes — assemble it in a foil pan and freeze before baking for best results.
Final Thoughts
This Keto Philly Cheesesteak Casserole is more than a low-carb alternative — it’s a celebration of bold flavors, melted cheese, and real comfort food. Whether you’re feeding a family or meal-prepping for the week, it’s a dish that satisfies cravings while staying true to your keto goals.
Print
Keto Philly Cheesesteak Casserole: The Ultimate Low-Carb Comfort Food
- Total Time: 30 minutes
- Yield: 4 servings
- Diet: Gluten Free
Description
This Keto Philly Cheesesteak Casserole is a cheesy, beefy, low-carb twist on the classic sandwich. Packed with seasoned steak, bell peppers, onions, and a rich cheese layer, it’s a hearty, family-friendly keto dinner ready in just 30 minutes.
Ingredients
– 1.5 lbs ribeye or sirloin steak, thinly sliced
– 1 tbsp avocado oil
– 1 red bell pepper, sliced
– 1 yellow bell pepper, sliced
– 1 medium onion, sliced
– 2 cloves garlic, minced
– 4 oz cream cheese
– 1 tbsp Worcestershire sauce
– 1 tsp sea salt
– 1/2 tsp black pepper
– 1/2 tsp smoked paprika
– 1.5 cups shredded mozzarella
– 6 slices provolone cheese
– Fresh parsley, for garnish
Instructions
1. Preheat oven to 375°F and grease an 8×8 casserole dish.
2. Sear steak slices in avocado oil until browned; remove and set aside.
3. Sauté onions and peppers until soft; add garlic and cook 1 minute.
4. Stir in cream cheese, Worcestershire, and spices; melt fully.
5. Return steak to pan and mix well.
6. Transfer mixture to casserole dish. Top with mozzarella and provolone.
7. Bake 15–18 minutes until bubbly.
8. Garnish with parsley and serve.
Notes
Swap in ground beef or leftover roast beef. Add jalapeños for heat. Can be made ahead and refrigerated or frozen before baking.
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Category: Dinner, Main Course
- Method: Baking, Sautéing
- Cuisine: American
Nutrition
- Serving Size: 1/4 of the recipe
- Calories: 510 kcal
- Sugar: 2g
- Sodium: 550mg
- Fat: 38g
- Saturated Fat: 17g
- Unsaturated Fat: 19g
- Trans Fat: 0g
- Carbohydrates: 7g
- Fiber: 2g
- Protein: 40g
- Cholesterol: 110mg
Keywords: Keto Philly Cheesesteak Casserole, keto casserole, low-carb cheesesteak, cheesy keto dinner