01 - Cook the pasta according to package instructions until al dente. Drain thoroughly and set aside, reserving a small amount of pasta water if needed.
02 - Heat a large nonstick skillet over medium-high heat. Add the ground beef or shaved steak and cook, breaking up any clumps, until browned throughout, approximately 5-6 minutes. Drain any excess fat if necessary.
03 - Add the diced onion, bell pepper, and sliced mushrooms to the skillet with the beef. Sauté for 5-7 minutes until vegetables are softened and edges begin to caramelize. Stir in minced garlic and cook for 1 additional minute until fragrant.
04 - Add Worcestershire sauce, smoked paprika, salt, black pepper, and chili flakes to the skillet. Stir thoroughly to distribute seasonings evenly throughout the meat and vegetable mixture.
05 - Reduce heat to low. Stir in cottage cheese and milk, mixing continuously until the cottage cheese melts completely and forms a smooth, creamy sauce coating the ingredients.
06 - Add the cooked, drained pasta to the skillet. Fold gently to combine, ensuring the pasta is evenly coated with the cheesy meat sauce.
07 - Sprinkle shredded provolone and mozzarella cheeses evenly over the top. Cover the skillet and cook for 2-3 minutes until the cheese is fully melted and bubbly.
08 - Remove from heat and serve immediately while hot. Garnish with chopped fresh parsley if desired for a pop of color and fresh flavor.