1. 1. Begin by bringing a large pot of salted water to a boil. Cook the macaroni according to the package instructions until it reaches an al dente texture. Reserve 1/2 cup of the pasta water, then drain the pasta and set it aside.

2. 2. In a large skillet over medium heat, melt the butter (or heat the olive oil). Add the ground beef and cook until it’s browned. Season the meat with salt, pepper, paprika, and chili flakes to taste. Once cooked, remove the meat from the skillet and set it aside.

3. 3. In the same skillet, sauté the chopped onions, garlic, and bell peppers for 4-5 minutes, or until they’re softened and fragrant.

4. 4. Reduce the heat to low, then add the light cream cheese, shredded mozzarella, and cheese slices to the skillet. Gradually stir in the reserved pasta water, allowing the cheeses to melt and create a smooth, creamy sauce.

5. 5. Return the cooked meat to the skillet, then gently fold in the cooked macaroni until everything is evenly coated in the luscious cheese sauce.

6. 6. Garnish your High-Protein Creamy Philly Cheesesteak Mac & Cheese with fresh parsley and serve it hot, straight from the skillet.