Keto Philly Cheesesteak Casserole
This casserole is perfect for busy evenings when you want something hearty and filling without spending hours in the kitchen.
Prep Time 15 minutes mins
Cook Time 25 minutes mins
Total Time 40 minutes mins
Course Main Course
Cuisine American
Servings 6 servings
Calories 450 kcal
Large skillet or frying pan
Mixing Bowl
Measuring cups and spoons
Baking dish (9x13-inch recommended)
Spatula or wooden spoon
Oven Mitts
For the Casserole:
- 1 lb thinly sliced ribeye or sirloin steak
- 1 medium green bell pepper thinly sliced
- 1 medium red bell pepper thinly sliced
- 1 medium yellow onion thinly sliced
- 2 cups shredded provolone cheese
- 1 cup shredded mozzarella cheese
- 2 tbsp olive oil
- Salt and pepper to taste
For the Creamy Sauce:
- 1/2 cup cream cheese softened
- 1/2 cup heavy cream
- 1/4 cup mayonnaise
- 1 tsp garlic powder
- 1/2 tsp smoked paprika
- 1/4 tsp crushed red pepper flakes optional, for a little kick
Step 1: Preheat and Prep
Preheat your oven to 375°F (190°C).
Lightly grease your 9x13-inch baking dish with a little olive oil or nonstick spray.
Slice the steak into thin strips if it isn’t already pre-sliced. This ensures it cooks quickly and evenly.
Pro Tip: Let the steak sit at room temperature for 10–15 minutes before cooking. This helps it sear rather than steam.
Step 2: Sauté the Veggies
Heat 2 tablespoons of olive oil in a large skillet over medium heat.
Add the sliced onions and bell peppers. Season with a pinch of salt and pepper.
Sauté for about 5–7 minutes until softened and slightly caramelized.
Pro Tip: Stir occasionally but don’t over-stir—letting the veggies get a little color adds flavor.
Step 3: Cook the Steak
Push the veggies to the side of the skillet or remove them temporarily.
Add the steak strips in a single layer. Sprinkle with a little salt, pepper, and garlic powder.
Cook for 2–3 minutes per side until browned but still tender.
Pro Tip: Avoid overcrowding the pan. If needed, cook the steak in two batches to get a nice sear.
Step 4: Make the Creamy Sauce
In a mixing bowl, combine the cream cheese, heavy cream, mayonnaise, garlic powder, smoked paprika, and red pepper flakes (if using).
Whisk until smooth and fully combined.
Pro Tip: Whisk continuously to prevent lumps and ensure a silky, creamy texture.
Step 5: Assemble the Casserole
Spread half of the cooked steak and veggie mixture evenly in the prepared baking dish.
Pour half of the creamy sauce over the top and gently stir to combine.
Sprinkle half of the shredded provolone and mozzarella cheeses on top.
Repeat layers with the remaining steak mixture, sauce, and cheeses.
Step 6: Bake to Perfection
Place the casserole in the preheated oven.
Bake uncovered for 20–25 minutes, until the cheese is melted and bubbly.
For a golden top, switch the oven to broil for the last 2–3 minutes—but watch closely so it doesn’t burn.
Step 7: Serve and Enjoy
Let the casserole rest for 5 minutes before serving. This helps it set and makes it easier to portion.
Serve as-is for a rich, hearty meal or pair with a side salad for a lighter, low carb dinner.
Nutritional Value (per serving):
- Calories: ~450 kcal
- Protein: 35g
- Fat: 32g
- Carbohydrates: 5g
- Fiber: 1g
- Net Carbs: 4g
- Sodium: 700mg
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Nutrition Disclaimer:
The nutritional information provided on this website is an estimate only and is intended for general guidance. We cannot guarantee its accuracy and recommend consulting a qualified healthcare professional or registered dietitian for personalized nutrition advice.
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