1. Prepare the Sauce Base: Heat vegetable oil in a large saucepan over medium heat. Add the chopped onion and bell pepper, cooking until softened. Stir in the garlic and cook briefly until fragrant.
2. Cook the Beef: Add the ground beef and break it apart with a spoon. Cook until browned and thoroughly cooked.
3. Add the Vegetables: Stir in the tomatoes, tomato paste, and grated carrot. Cook for approximately 5 minutes until the tomatoes begin to soften and release their juices.
4. Season the Sauce: Add salt, black pepper, oregano, paprika, and the bay leaf. Pour in the beef broth or water and mix well.
5. Simmer: Reduce the heat and simmer the sauce for 20–25 minutes, stirring occasionally, until thick and flavourful. Remove the bay leaf and add fresh parsley.
6. Cook the Pasta: Bring water to a boil in a large pot. Add salt and the tallarín pasta. Cook according to the package instructions until al dente. Drain the pasta.
7. Combine: Add the cooked pasta to the meat sauce and toss gently until evenly coated. Alternatively, arrange the pasta on a serving plate and spoon the sauce over it.
8. Serve: Finish with grated cheese and fresh parsley. Serve hot as a satisfying lunch or dinner.