Creating the Simple Ground Beef Shells Skillet is straightforward. Follow these steps to make a delicious meal easily:

1. Cook Pasta: In a large pot, bring water to a boil. Add the medium pasta shells and cook according to package directions until al dente. Drain and set aside.
2. Brown Beef: In a large skillet over medium heat, add the ground beef. Season with salt and pepper. Cook until browned, about 5-7 minutes. Drain excess fat if necessary.
3. Add Seasonings: Sprinkle in the garlic powder, onion powder, and Italian seasoning. Stir well to combine and cook for an additional 1-2 minutes for optimal flavor.
4. Combine Ingredients: Stir in the marinara sauce and beef broth, allowing the mixture to simmer for a few minutes.
5. Add Pasta: Gently fold in the cooked pasta shells, mixing until they are well coated with the sauce.
6. Cheese It Up: Sprinkle the shredded mozzarella cheese and grated Parmesan cheese evenly over the pasta mixture.
7. Melt the Cheese: Cover the skillet and reduce heat to low. Allow the cheese to melt for about 3-5 minutes.
8. Garnish: Once the cheese is melted and bubbly, remove the skillet from heat. Garnish with chopped parsley if desired.

Your Simple Ground Beef Shells Skillet is now ready to be served, bursting with flavor and oozy cheese!