kosher salt
1 lb. pasta
extra-virgin olive oil
1 lb. ground beef
Freshly ground black pepper
3 garlic cloves, minced
1 onion, chopped
1 tsp. crushed red chili flakes
1 tbsp. Worcestershire sauce
2 tbsp. tomato paste
1/2 c. chopped parsley, plus more for garnish
2 c. grated mozzarella