Making Italian Sausage Pasta is straightforward when you follow these steps:

1. Cook Pasta: Boil a large pot of salted water. Add the pasta and cook according to package instructions until al dente. Drain and set aside.
2. Brown the Sausage: In a large skillet, heat the olive oil over medium heat. Add the Italian sausage, breaking it up with a spatula. Cook until browned, about 5-7 minutes.
3. Add Aromatics: Add the diced onion and sauté until softened, approximately 3-4 minutes. Stir in the minced garlic and cook for an additional 1-2 minutes, until fragrant.
4. Incorporate Tomatoes: Add the crushed tomatoes and tomato sauce to the skillet. Stir well to combine.
5. Season the Sauce: Mix in the dried oregano, dried basil, red pepper flakes (if using), and season with salt and black pepper to taste.
6. Simmer: Allow the sauce to simmer for about 10 minutes, stirring occasionally.
7. Combine Pasta and Sauce: Add the drained pasta to the skillet. Toss to coat the pasta thoroughly with the sauce.
8. Adjust Seasoning: Taste and adjust the seasoning if necessary, adding more salt, pepper, or herbs as desired.
9. Serve Immediately: Remove from heat and serve hot, topped with grated Parmesan cheese and fresh basil leaves.

These steps will ensure you create a truly incredible Italian Sausage Pasta that will impress your family and friends!