In a large pot, heat the oil over medium heat. Add the onion and cook until softened, about 5-7 minutes. Add the garlic and cook for an additional 1-2 minutes, until fragrant.

Add the beef, breaking it up with a spoon, and cook until browned, about 8-10 minutes.

Stir in the diced tomatoes, pasta sauce, beef broth, water, and Italian seasoning. Bring to a boil, then add the pasta and stir to combine.

Reduce the heat to a simmer and cover the pot. Cook for the time indicated on the pasta package instructions, until the pasta is al dente. Stir halfway through and add more water if needed.

Season to taste with salt and pepper, and serve.