
Bring a large pot of salted water to a boil for the pasta.
In a skillet with oil over medium-high heat, cook diced onion 3 minutes, then add the beef and brown 6-7 minutes; drain. Add minced garlic and tomato paste for 1 minute.
Stir in crushed tomatoes and Italian seasoning; simmer 15 minutes, stirring now and then. Season with salt and pepper.
Cook the spaghetti per the package, reserve 1/2 cup water, and drain. Toss the pasta with sauce, loosening with pasta water if needed.
Serve with Parmesan on top.
Photo: DinnerDrop