Creating the Cheesy Low Carb Philly Cheesesteak Casserole is straightforward. Just follow these steps:

1. Preheat your Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Beef: In a large skillet over medium heat, add olive oil. Once hot, add the sliced beef and cook until browned, about 5-7 minutes. Remove from the skillet and set aside.
3. Sauté the Vegetables: In the same skillet, add the sliced bell peppers and onion. Sauté until they are softened, about 5 minutes. Season with garlic powder, onion powder, Italian seasoning, salt, and pepper.
4. Combine Ingredients: Return the cooked beef to the skillet with the vegetables and mix well, letting everything combine for 2-3 minutes. Remove from heat.
5. Prepare the Egg Mixture: In a bowl, whisk together the heavy cream and eggs until well combined. Season with a pinch of salt and pepper.
6. Layer the Ingredients: In a greased 9×13-inch baking dish, layer half of the beef and vegetable mixture. Sprinkle 1 cup of cheese on top. Repeat the layering with the remaining beef and vegetables, followed by the egg mixture, ensuring it covers everything.
7. Top with Cheese: Finally, sprinkle the remaining cheese over the top layer.
8. Bake: Place the baking dish in the preheated oven and bake for about 30 minutes, or until the cheese is bubbly and golden brown.
9. Garnish: Allow the casserole to cool slightly before garnishing with fresh parsley if desired.

Now, you’re all set to enjoy this delightful dish full of cheesy goodness!