Keto Low-Carb Philly Cheesesteak Casserole

Prep Time

15 minutes

Cook Time

30–35 minutes

Total Time

45–50 minutes

Servings

4–6 servings

Ingredients

Main Ingredients

• 1½ pounds beef (ribeye, sirloin, or shaved steak)

• 2 tablespoons olive oil or butter

• 1 medium green bell pepper, thinly sliced

• 1 medium red bell pepper, thinly sliced

• 1 medium onion, thinly sliced

• 2 cloves garlic, minced

• Salt and black pepper, to taste

Creamy Sauce

• 8 ounces cream cheese, softened

• ½ cup heavy cream

• 1 teaspoon Worcestershire sauce (optional but recommended)

• ½ teaspoon garlic powder

• ½ teaspoon onion powder

Cheese Topping

• 1½ cups shredded provolone cheese
  (or provolone slices torn into pieces)

• Optional: ½ cup shredded mozzarella for extra melt

Instructions

1. Prepare the Oven and Dish

• Preheat oven to 375°F (190°C).

• Lightly grease a 9×13-inch baking dish or similar casserole dish.

2. Cook the Beef

• Heat 1 tablespoon of oil or butter in a large skillet over medium-high heat.

• Add the beef in batches if necessary to avoid overcrowding.

• Season with salt and black pepper.

• Cook until browned and just cooked through.

• Remove beef from skillet and set aside.

3. Cook the Vegetables

• In the same skillet, add remaining oil or butter.

• Add sliced onions and bell peppers.

• Cook over medium heat for 6–8 minutes until softened and lightly caramelized.

• Add minced garlic and cook for 30 seconds.

• Remove from heat.

4. Make the Creamy Sauce

• In a medium bowl, combine:

  • Softened cream cheese

  • Heavy cream

  • Worcestershire sauce

  • Garlic powder

  • Onion powder

• Whisk or stir until smooth and well blended.

5. Assemble the Casserole

• Spread the cooked beef evenly in the prepared baking dish.

• Layer the cooked peppers and onions on top.

• Pour the cream cheese mixture evenly over everything.

• Gently stir to distribute the sauce.

• Sprinkle provolone (and mozzarella if using) evenly over the top.

6. Bake

• Place casserole in the oven uncovered.

• Bake for 20–25 minutes, or until:

  • Cheese is melted and bubbly

  • Edges are lightly golden

• Optional: Broil for 2–3 minutes for a lightly browned top.

7. Rest and Serve

• Remove from oven and let rest for 5 minutes before serving.

• Serve on its own or with a keto-friendly side.

Tips for Best Results

• Ribeye gives the most authentic Philly cheesesteak flavor.

• Slice beef thinly against the grain for tenderness.

• Avoid overcooking the beef initially since it will bake again.

• Full-fat dairy keeps the dish keto and prevents separation.

Keto Nutrition (Approximate per serving)

• Net Carbs: 4–6g

• Fat: High

• Protein: Moderate to high

Variations

• Add mushrooms for extra flavor (slightly increases carbs).

• Use Monterey Jack or white American cheese instead of provolone.

• Make it spicy with sliced jalapeños or crushed red pepper.