1. Start by bringing a large pot of salted water to a boil. Add the bow tie pasta and cook according to the package instructions until al dente. Drain the pasta and set it aside.

2. In a large skillet, heat the olive oil over medium heat. Remove the sausage from its casing and cook until browned and fully cooked through, breaking it up into small pieces as it cooks.

3. Add the chopped onion and minced garlic to the skillet with the cooked sausage. Sauté until the onion is softened and the garlic is fragrant, about 3-5 minutes.

4. Stir in the diced tomatoes and heavy cream to the skillet. Simmer the mixture for 5-7 minutes, allowing the flavors to meld and the sauce to thicken slightly.

5. Add the cooked bow tie pasta to the skillet and toss everything together until the pasta is evenly coated in the creamy tomato sauce. Stir in the grated Parmesan cheese and season with salt and pepper to taste.

6. Transfer the Italian Sausage with Bow Tie Pasta to a serving dish and garnish with fresh basil or parsley. Serve this hearty, comforting dish warm and enjoy every delicious bite!