Preheat oven to 350°F (175°C). Spray a 9×9-inch baking dish with non-stick spray.
Dice the bell peppers and onion into bite-sized pieces. Mince the garlic.
In a skillet, cook the ground beef over medium heat, breaking it up as it cooks.
Once the beef is mostly cooked, add the peppers, onion, and garlic. Cook until vegetables are softened.
Season with seasoned salt and mix well.
Transfer the beef and vegetable mixture to the prepared baking dish.
In a bowl, whisk together eggs, heavy cream, hot sauce, and Worcestershire sauce.
Pour the egg mixture over the beef mixture in the baking dish.
Top with provolone cheese slices, covering the entire dish.
Bake for 25-30 minutes, or until the eggs are set and the cheese is bubbly.
Let cool for 5 minutes before serving.
Pro Tips for the Best Philly Cheese Steak Casserole
Use lean beef – Reduces excess grease while keeping the dish flavorful.
Try different cheeses – Swap provolone for mozzarella, cheddar, or Swiss.
Make it spicier – Add extra hot sauce or diced jalapeños.
Prep ahead – Cook the beef and veggies in advance for quick assembly.
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