Brown the ground beef - Add 1 tablespoon of olive oil to a large heavy-bottomed Dutch oven or saucepot set over medium-high heat. Brown the ground beef and sprinkle with salt and pepper, to season. Transfer beef to a clean plate and set aside.
Cook the onions, bell pepper, and garlic - To the same pot add the remaining tablespoon of olive oil and return to medium heat. Add the onions and cook for 5-7 minutes, or until soft and translucent, stirring often. Mix in the diced bell pepper and continue to cook for 3-4 minutes. Sprinkle with salt and stir in the minced garlic. Cook, stirring continuously, for 1 minute.
Mix the onions with the tomato paste and seasoning - Add the tomato paste to the vegetables, mixing thoroughly until combined. Add the basil, thyme, oregano, and a pinch of salt and pepper. Mix well to combine.
Add tomatoes - Stir in the tomatoes, sugar, Worcestershire sauce, water, and return the cooked ground beef back to the pot. Mix well to combine. Bring sauce to a low boil, then reduce heat to medium-low, cover, and allow the sauce to simmer for at least 20 minutes.
Season to taste - Season with additional salt, pepper, Italian seasoning, or sugar, to taste. Serve with cooked spaghetti noodles or other pasta of choice. Garnish with chopped parsley and shredded parmesan cheese, if desired.