If you love the bold flavors of a Philly cheesesteak but want a low-carb, keto-friendly option, you’re going to adore this Keto Philly Cheesesteak Casserole. This dish combines tender shaved steak, sautéed peppers and onions, and a creamy, cheesy sauce that brings all the comfort of a classic sandwich into a simple, oven-ready casserole.
Over the past few years, I’ve found that one of the best ways to enjoy my favorite flavor profiles while staying low-carb is to turn them into hearty casseroles. From my Keto Reuben Casserole to a savory BBQ Chicken Casserole, these recipes are a lifesaver for busy weeknights. And this Philly Cheesesteak version is no exception—it’s rich, satisfying, and perfect for family dinners or meal prep.
Why You’ll Love This Keto Philly Cheesesteak Casserole
This recipe isn’t just delicious—it’s versatile, easy, and packed with protein. Here’s why it quickly became a favorite in my house:
- Creamy, cheesy goodness: The sauce combines cream cheese and provolone to create a smooth, indulgent texture.
- Tender, flavorful steak: Using shaved steak or thinly sliced beef ensures each bite is juicy and full of flavor.
- Low-carb and keto-friendly: Perfect for anyone watching carbs while still craving something hearty.
- Customizable: You can add mushrooms, switch up the cheese, or even try poblano peppers for a different twist.
Tips and Tricks for the Perfect Casserole
To make this casserole shine, keep a few tips in mind:
- Softer vegetables: If you prefer softer, slightly caramelized onions and peppers, cook them a few minutes longer before combining with the steak.
- Alternative meats: Ground beef works well if you don’t have shaved steak on hand. It still soaks up the cheesy sauce beautifully.
- Cheese swaps: While provolone is traditional, cheddar or mozzarella can give a different flavor profile without compromising creaminess.
- Extra veggies: Add sautéed mushrooms, or try different bell pepper colors for a more vibrant dish.
This casserole works well as a make-ahead meal too. Simply assemble, cover, and refrigerate for a day or two, then bake when you’re ready to eat. It’s a perfect solution for busy weeknights or meal prep enthusiasts looking to enjoy keto-friendly comfort food without the fuss.
How to Make Keto Philly Cheesesteak Casserole
The process is straightforward, but the results are impressive. Here’s the step-by-step approach:
- Prep the steak: Season shaved steak with salt and pepper. Heat avocado oil in a skillet over medium-high heat, then cook the steak until browned. Remove from heat, let it cool slightly, and chop into bite-sized pieces.
- Cook the vegetables: In the same skillet, sauté chopped onions and bell peppers for about 6 minutes, or until softened. Add garlic powder and season with salt and pepper to taste. Combine with the chopped steak and remove from heat.
- Make the creamy cheese sauce: Melt butter in a saucepan, then add beef broth and bring to a simmer. Reduce heat and whisk in cubed cream cheese until smooth. Lower the heat and stir in half of the provolone until melted and thickened.
- Combine: Pour the cheese sauce over the steak and vegetable mixture, stirring until evenly coated. Transfer everything into a casserole dish and top with the remaining provolone.
Baking Your Keto Philly Cheesesteak Casserole
Once your casserole is assembled, it’s time to let the oven do the magic. Preheat your oven to 350°F (175°C) and bake the dish for about 25–30 minutes, or until the cheese is bubbly and golden on top. The aroma of melted cheese, tender beef, and sweet peppers will fill your kitchen—an instant crowd-pleaser.
If you like a slightly crispier top, you can broil the casserole for 1–2 minutes at the very end. Just keep a close eye so it doesn’t burn.
Serving Suggestions
This Keto Philly Cheesesteak Casserole is a complete meal on its own, thanks to its balance of protein, healthy fats, and vegetables. Here are some ideas to make your meal even more satisfying:
- Serve with a simple green salad or steamed low-carb vegetables.
- Pair with roasted cauliflower or zucchini noodles for extra veggies.
- For meal prep, divide into individual portions and store in airtight containers in the fridge for up to 3–4 days.
This casserole is also freezer-friendly! Assemble it in a freezer-safe dish, cover tightly, and freeze for up to 2 months. When ready to enjoy, thaw in the fridge overnight and bake as directed.
Variations to Try
- Cheese swap: Try cheddar, mozzarella, or a mix of cheeses for a different flavor.
- Extra veggies: Mushrooms, poblano peppers, or spinach add more texture and nutrients.
- Ground beef alternative: If shaved steak is unavailable, ground beef works wonderfully and blends with the cheese sauce.
Keto Philly Cheesesteak Casserole: A Low-Carb Comfort Classic
- Total Time: 1 hr
Ingredients
2 pounds shaved steak
Salt and pepper, to taste
1 tablespoon avocado oil
1 chopped onion
1 bell pepper, sliced into ½-inch strips (red, green, or yellow)
1 teaspoon garlic powder
1 tablespoon butter
¾ cup beef broth
4 ounces cream cheese, cubed
16 ounces grated provolone, divided
Instructions
- Preheat oven to 350°F (175°C). Season steak with salt and pepper.
- Heat avocado oil in a large skillet over medium-high heat. Add steak and cook until browned, about 2 minutes per side. Remove from heat, let cool slightly, and chop.
- In the same skillet, sauté onion and bell pepper for 6 minutes until softened. Add garlic powder, salt, and pepper. Mix in chopped steak and remove from heat.
- Melt butter in a saucepan, add beef broth, and bring to a simmer. Reduce heat, add cream cheese, and whisk until smooth. Reduce to low heat and stir in half of the provolone until melted.
- Pour cheese sauce over steak and vegetables, stirring to combine. Transfer to a casserole dish and top with remaining provolone.
- Bake for 25–30 minutes until bubbly and golden. Optional: broil 1–2 minutes for a crispier top.
Notes
- Meal Prep: Store leftover portions in airtight containers in the fridge for up to 4 days.
- Freezer-Friendly: Assemble in a freezer-safe dish and freeze for up to 2 months. Thaw overnight before baking.
- Vegetable Variations: Add mushrooms, spinach, or poblano peppers for more flavor and nutrients.
- Cheese Options: Provolone works best, but cheddar or mozzarella can be substituted.
- Prep Time: 15 min
- Cook Time: 45 min
