Follow these simple steps to create your own Cheesy Beef and Pasta Casserole:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
2. Cook the Pasta: In a large pot, boil water and cook the pasta according to the package instructions until al dente. Drain and set aside.
3. Brown the Beef: In a large skillet, heat the olive oil over medium heat. Add the chopped onion and minced garlic, sautéing until the onion is translucent.
4. Add the Ground Beef: Add the ground beef to the skillet. Cook until browned, breaking it apart with a spatula. Drain excess fat if necessary.
5. Combine Ingredients: Stir in the diced tomatoes, tomato sauce, Italian seasoning, salt, and pepper. Cook for an additional 5 minutes, allowing the flavors to meld.
6. Mix in Pasta: Add the drained pasta to the beef mixture, stirring until well combined.
7. Layer with Cheese: In the greased baking dish, pour half of the beef and pasta mixture. Sprinkle half of the cheddar cheese on top. Add the remaining mixture and finish with the mozzarella cheese.
8. Bake: Cover the dish with aluminum foil and bake in the preheated oven for 20 minutes. Then, remove the foil and bake for an additional 10 minutes, or until the cheese is bubbly and golden.
9. Garnish: Once baked, remove from the oven and let it cool for a few minutes. Garnish with chopped parsley before serving.

These steps will guide you in creating a delicious Cheesy Beef and Pasta Casserole that will leave your family and friends craving more!