Low Carb Philly Cheesesteak Casserole

I love making this Low Carb Philly Cheesesteak Casserole when I want all the bold, savory flavors of a classic cheesesteak without the bread. Tender beef, sautéed peppers and onions, and plenty of melted cheese come together in one satisfying, oven-baked dish. I find it perfect for weeknight dinners when I want something hearty but low in carbs.

Why You’ll Love This Recipe

I appreciate how this casserole keeps the rich, cheesy goodness of a Philly cheesesteak while staying simple and low carb. I enjoy the combination of juicy beef and sweet sautéed vegetables baked under a layer of gooey cheese. It’s easy to prepare, filling, and great for meal prep. I also like that it reheats beautifully.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

1 1/2 lbs thinly sliced beef (such as sirloin or shaved steak)
1 tablespoon olive oil
1 green bell pepper, sliced
1 red bell pepper, sliced
1 small onion, sliced
2 cloves garlic, minced
1 teaspoon salt
1/2 teaspoon black pepper
1 teaspoon Worcestershire sauce
4 oz cream cheese, softened
1/2 cup heavy cream
1 1/2 cups shredded provolone or mozzarella cheese

Directions

1. I preheat my oven to 375°F (190°C) and lightly grease a baking dish.

2. In a large skillet over medium heat, I heat olive oil and sauté the sliced peppers and onion until softened.

3. I add minced garlic and cook until fragrant.

4. I stir in the thinly sliced beef and cook until browned and fully cooked.

5. I season with salt, black pepper, and Worcestershire sauce.

6. I reduce the heat and stir in softened cream cheese and heavy cream until creamy and well combined.

7. I transfer the mixture to the prepared baking dish and spread it evenly.

8. I sprinkle shredded provolone or mozzarella cheese over the top.

9. I bake for 15–20 minutes, until the cheese is melted and bubbly.

10. I let it cool for a few minutes before serving.

Servings and Timing

Servings: 4–6
Prep Time: 10 minutes
Cook Time: 25 minutes
Total Time: 35 minutes

Variations

I sometimes add sautéed mushrooms for extra depth of flavor. When I want a spicier version, I mix in sliced jalapeños or a pinch of red pepper flakes. I also enjoy using white American cheese for a more traditional cheesesteak flavor. For extra richness, I sprinkle additional cheese on top before baking.

storage/reheating

I store leftovers in an airtight container in the refrigerator for up to 4 days. When reheating, I warm portions in the oven at 325°F or microwave gently until heated through. I can also freeze the casserole for up to 2 months and thaw overnight before reheating.

FAQs

Can I use ground beef instead of sliced beef?

I can substitute ground beef, though the texture will be slightly different.

What cheese works best?

I prefer provolone for classic flavor, but mozzarella or white American cheese also melt beautifully.

Can I make this ahead of time?

I assemble it ahead and refrigerate, then bake when ready to serve.

Is this recipe keto-friendly?

Yes, it fits well into a low-carb or keto lifestyle due to its minimal carbohydrates.

What can I serve with this casserole?

I like serving it with a simple green salad or roasted vegetables for a complete meal.

Conclusion

I find this Low Carb Philly Cheesesteak Casserole to be a satisfying and flavorful way to enjoy classic cheesesteak flavors without the bread. The tender beef, sautéed vegetables, and melted cheese create a comforting dish that’s both hearty and easy to prepare. It’s a recipe I turn to whenever I want something rich, simple, and low in carbs.