Creating Creamy Beef and Shells is simple and straightforward. Just follow these steps to create this wonderful dish easily:

1. Cook the Pasta: In a large pot of boiling salted water, cook the shell pasta according to package instructions until al dente. Drain and set aside.
2. Brown the Beef: In the same pot, heat olive oil over medium heat. Add the chopped onion and sauté until translucent, about 3-5 minutes. Add minced garlic and cook for an additional minute.
3. Add Ground Beef: Add the ground beef to the pot. Cook until browned, breaking it apart with a spoon, about 7-10 minutes.
4. Incorporate Tomatoes and Spice: Stir in the diced tomatoes (with juice), beef broth, Italian seasoning, salt, and black pepper. Bring to a simmer.
5. Add Cream: Once simmering, reduce the heat to low and stir in the heavy cream until well combined. Allow it to cook for an additional 3-5 minutes.
6. Combine with Pasta: Fold in the cooked shell pasta and shredded cheddar cheese. Stir until the cheese melts and everything is evenly coated in the creamy sauce.
7. Adjust Seasoning: Taste and adjust seasoning if needed, adding more salt or pepper to suit your preference.
8. Garnish and Serve: Serve hot, garnishing with freshly chopped parsley for an added touch.

These steps ensure that your Creamy Beef and Shells turn out incredible every time, with a rich sauce that clings delightfully to the pasta.