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A close-up of a golden-brown casserole topped with melted cheese, sliced green bell peppers, and tender beef strips, served in a rustic baking dish with a slice lifted, revealing layers of cheesy beef and colorful vegetables.

Hearty & Cheesy Low-Carb Philly Cheesesteak Casserole

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Hearty & Cheesy Low-Carb Philly Cheesesteak Casserole is a delicious keto-friendly dish combining tender beef, melted cheese, and savory vegetables. Perfect for quick weeknight dinners, meal prep, and low-carb lifestyles, this casserole offers the authentic flavors of a classic Philly cheesesteak in a wholesome, baked dish. Easy to make and full of flavor, it’s a family favorite for anyone seeking a satisfying, low-carb comfort food.

  • Total Time: 40 minutes
  • Yield: 4 servings

Ingredients

Scale
  • 1 lb (450g) sirloin steak or ribeye, thinly sliced
  • 1 tablespoon olive oil
  • 1 medium bell pepper, sliced
  • 1 small onion, sliced
  • 3 cloves garlic, minced
  • 1 cup sliced mushrooms (optional)
  • 1 cup shredded cheddar cheese
  • 1/2 cup cream cheese, softened
  • 1/2 cup beef broth
  • 1 teaspoon Italian seasoning
  • Salt and pepper to taste
  • Fresh parsley, chopped (for garnish)

Instructions

  1. Heat olive oil in a large skillet over medium-high heat. Add sliced beef and cook until browned, about 3-4 minutes. Remove and set aside.
  2. In the same skillet, add sliced onions, bell peppers, and mushrooms. Cook until tender, about 5-7 minutes. Add minced garlic and cook for an additional 1 minute.
  3. Return the cooked beef to the skillet. Stir in cream cheese, beef broth, and Italian seasoning. Cook, stirring frequently, until heated through and creamy. Season with salt and pepper.
  4. Preheat oven to 375°F (190°C). Transfer beef mixture to a greased casserole dish. Sprinkle shredded cheddar cheese evenly over the top.
  5. Bake in the oven for 15-20 minutes until cheese is melted and bubbly. Broil for an additional 2 minutes for a golden finish.

Notes

  • Allow the casserole to cool completely before storing in an airtight container. Reheat in the microwave or oven. It keeps well in the fridge for up to 3 days.
  • For a richer flavor, add sautéed mushrooms or chopped green onions before baking. You can also customize the cheese blend with mozzarella or pepper jack.
  • Author: Serena Miller
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Category: Main Course
  • Method: Baked
  • Cuisine: American
  • Diet: Keto, Low-Carb

Nutrition

  • Serving Size: 1 slice
  • Calories: 450 kcal Kcal
  • Sugar: 4g
  • Sodium: 800mg
  • Fat: 35g
  • Saturated Fat: 15g
  • Unsaturated Fat: 20g
  • Trans Fat: 0g
  • Carbohydrates: 8g
  • Fiber: 3g
  • Protein: 30g
  • Cholesterol: 120mg
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