Preheat oven to 350°F and grease a 9x13-inch baking dish.
In the prepared baking dish, combine uncooked ground beef, breaking it into small crumbles with your hands, along with uncooked egg noodles, mushrooms, onion, and garlic.
In a separate bowl, whisk together beef broth, cream of mushroom soup, sour cream, Worcestershire sauce, paprika, salt, and pepper until smooth.
Pour the sauce mixture over the beef and noodles, stirring to combine everything evenly.
Cover tightly with aluminum foil and bake for 35 to 45 minutes, stirring after 20 minutes, until the noodles are tender and the ground beef reaches 160°F (71°C) throughout.
Remove foil, sprinkle mozzarella cheese over the top, and bake uncovered for 5 more minutes until cheese is melted and golden.
Let stand for 5 minutes, garnish with fresh parsley, and serve hot.