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Recipe

Philly Cheesesteak Casserole

Updated on 4 min read
philly cheesesteak 7 Recipe

Quick Description

This Philly Cheesesteak Casserole is an indulgent, low-carb dish made with roast beef, sautéed bell peppers, onions, and mushrooms, all topped with melted Provolone and mozzarella cheese. It’s the perfect keto dinner, combining all the flavors of a classic Philly cheesesteak in a cheesy, hearty casserole.

Servings & Timing

  • Servings: 6
  • Prep Time: 15 minutes
  • Cook Time: 25 minutes
  • Total Time: 40 minutes

Ingredients List

  • 1 large green bell pepper, sliced
  • 1 large yellow bell pepper, sliced
  • 1 large red bell pepper, sliced
  • 2 tablespoons salted butter
  • 1 small onion, thinly sliced (about ½ cup)
  • 3 cloves garlic, minced
  • 8 ounces cremini mushrooms, thinly sliced
  • 1 ½ pounds deli-style roast beef, thinly sliced
  • 6 slices Provolone cheese (about 6 ounces)
  • 1 cup shredded mozzarella cheese

Instructions

Prepare the Peppers:

  1. Slice the Peppers:
    • Cut the tops off the bell peppers, remove the ribs and seeds, and thinly slice them. Set aside.

Sauté the Vegetables:

  1. Cook the Onion and Garlic:
    • Heat 2 tablespoons of butter in a large, deep-sided ovenproof skillet or Dutch oven over medium-low heat.
    • Add the onion and garlic and cook until the onion becomes translucent and the garlic is fragrant, about 7 minutes.
  2. Cook the Peppers and Mushrooms:
    • Add the sliced mushrooms and bell peppers to the skillet.
    • Cook for about 10 minutes, or until the mushrooms release their liquid and the peppers are crisp-tender.

Combine with Roast Beef:

  1. Add the Roast Beef:
    • Stir the deli-style roast beef into the vegetable mixture and combine well.
    • Taste the mixture and add salt and pepper to your liking.

Bake the Casserole:

  1. Top with Cheese:
    • Preheat your oven to 350°F (176°C).
    • Top the beef and vegetable mixture with the Provolone cheese slices, then sprinkle the shredded mozzarella cheese over the top.
  2. Bake the Casserole:
    • Bake the casserole in the preheated oven for 15 minutes until the cheese has melted and is bubbly.
  3. Broil for a Golden Finish:
    • Finish by placing the casserole under the broiler for 2–3 minutes to get the cheese browned and bubbly.

Serve:

  1. Serve the Casserole:
    • Remove from the oven and let cool for a few minutes before serving. Serve warm and enjoy!

Additional Notes

  • Meat Options: If you prefer, you can swap the roast beef for ground beef or chicken for a different protein source.
  • Cheese Variations: You can substitute Provolone with Swiss cheese or cheddar if desired.
  • Vegetable Variations: You can add spinach, zucchini, or cauliflower rice for more low-carb vegetables to bulk up the dish.

Dietary Info

  • Keto-Friendly
  • Low-Carb
  • High-Protein
  • Gluten-Free
  • Dairy Option (can be made dairy-free)

Ingredient Details & Substitutions

  • Bell Peppers: Use green bell peppers for a more traditional flavor, or any color of bell pepper for a sweeter taste.
  • Provolone Cheese: If Provolone isn’t available, you can substitute with mozzarella or gruyère for a slightly different flavor profile.
  • Roast Beef: If you can’t find deli-style roast beef, you can use shaved steak or even sliced chicken breast for a lighter option.

Recipe Variations & Serving Suggestions

  • Add Jalapeños: For a spicy kick, add jalapeño slices or some hot sauce to the mix.
  • Cauliflower Rice: Serve the casserole over cauliflower rice for a complete keto meal.
  • Side Salad: Pair with a keto-friendly salad like Caesar salad or a simple arugula salad for added freshness.

Storage & Make-Ahead

  • Refrigerate: Store leftovers in an airtight container in the fridge for up to 4 days.
  • Freeze: This casserole freezes well for up to 1 month. Let it cool completely, then store in an airtight container or freezer bag. Reheat in the oven or microwave when ready to serve.

Nutrition (Per Serving)

  • Calories: 400 kcal
  • Protein: 35 g
  • Fat: 30 g
  • Carbs: 7 g
  • Net Carbs: 5 g
  • Fiber: 2 g

FAQs

Q: Can I make this casserole ahead of time?
Yes, you can prepare this casserole ahead of time, refrigerate it, and bake it when ready. Just add a few extra minutes of baking time if it’s chilled.

Q: Can I use a different cheese?
Yes, you can swap Provolone for Swiss cheese, mozzarella, or cheddar cheese depending on your taste preferences.

Q: Can I add other vegetables to this casserole?
Yes! Feel free to add spinach, zucchini, or any other keto-friendly vegetables to make it even more nutritious.

Optional Personal Story

This Keto Philly Cheesesteak Casserole has quickly become one of my favorite weeknight meals. It’s incredibly easy to make, and I love how the cheesy topping makes every bite irresistible. It’s also a great option for meal prep — you can make it in advance and reheat it throughout the week!

Call-to-Action

Try this Keto Philly Cheesesteak Casserole tonight for an easy, satisfying meal that’s full of flavor! You’ll love the cheesy goodness and savory beef, peppers, and mushrooms.

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