Sauté Aromatics: Heat olive oil in a large skillet over medium heat. Sauté onions, garlic, carrot, and celery until softened (about 5 minutes).
Brown the Meat: Add ground beef or pork to the skillet. Cook until browned, breaking it up into small pieces as it cooks.
Simmer the Sauce: Stir in tomato paste, crushed tomatoes, oregano, and basil. Season with salt and pepper. Simmer for 20–30 minutes until the sauce thickens perfectly.
Cook the Pasta: Meanwhile, cook spaghetti according to package instructions. Drain and set aside.
Combine & Serve: Toss the cooked pasta with the rich meat sauce, top generously with grated Parmesan cheese, and serve hot as a premium centerpiece.