01 -
Preheat oven to 375°F. Thinly slice 1 large green bell pepper and 1 medium yellow onion. Mince 3 cloves garlic. This initial prep ensures a smooth start for your Low Carb Philly Cheesesteak Casserole Recipe.
02 -
Heat 2 tbsp olive oil in a large skillet over medium-high heat. Add the sliced green bell pepper and yellow onion, cooking for 5-7 minutes until softened. Stir in the 3 cloves minced garlic for the last minute.
03 -
Push vegetables to one side of the skillet. Add 1 1/2 lbs shaved beef sirloin or ribeye to the empty side. Season with salt and black pepper to taste. Cook, breaking it up, until browned, about 3-5 minutes. Mix with the vegetables.
04 -
In a medium bowl, whisk together 8 oz softened cream cheese, 1/4 cup low sodium beef broth, and 1 tbsp Worcestershire sauce until smooth and well combined. This creamy mixture is key to the rich texture of your Low Carb Philly Cheesesteak Casserole Recipe.
05 -
Pour the cream cheese mixture over the beef and vegetable blend in the skillet. Stir thoroughly until everything is evenly coated. Transfer this entire mixture into a 9x13 inch baking dish, spreading it out evenly.
06 -
Arrange 8 slices provolone cheese evenly over the beef mixture. Sprinkle 1 cup part-skim shredded mozzarella cheese over the provolone. This creates the classic golden, bubbly top for your Low Carb Philly Cheesesteak Casserole Recipe.
07 -
Bake in the preheated 375°F oven for 20-25 minutes, or until the cheese is melted, bubbly, and lightly golden brown. Keep an eye on it to prevent over-browning.
08 -
Remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the flavors to meld and the casserole to set, making it easier to portion.