Fill a large pot with water and bring to a boil. When boiling, heavily salt. (1 tbsp of kosher salt per 4 quartz water for every 1 lb of pasta). Add elbow noodles. Cook to package instructions until al dente. Drain and set pasta aside. (Drizzle with a little olive oil so the noodles don't stick together).
Using the same pot, add 2 tbsp of oil over medium high heat. Once hot, add onion, celery, and green pepper. Season with salt and pepper. Stir and sauté until onions are translucent, about 5 minutes.
Add garlic and cook for 1 minute, stirring frequently. Next, push vegetables to the side and add your ground beef. Break up into small pieces and season with salt. Cook until browned. (If there's a lot of fat, you can drain some off).
Next, add the tomato paste and cook for a couple minutes until slightly browned, stirring frequently. Then add worcestershire sauce, diced tomatoes, tomato sauce, and Italian seasoning. Stir and bring to a simmer.
Simmer for a few minutes. Add a little water or broth if it's too thick. Last, add your noodles in and stir to combine. Taste for seasoning and adjust.
Serve with grated Parmesan, if desired.