Creating your Cheesy Ground Beef Bake is simple if you follow these steps:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C).
2. Cook the Beef: In a large skillet, brown the ground beef over medium heat. Drain any excess fat.
3. Sauté Vegetables: Add the chopped onion and minced garlic to the skillet. Sauté until the onion becomes translucent.
4. Add Tomatoes and Sauce: Stir in the drained diced tomatoes and tomato sauce. Mix well.
5. Season: Add Italian seasoning, salt, and black pepper. Stir to combine.
6. Combine Ingredients: Add the cooked pasta and frozen mixed vegetables (if using) to the skillet. Mix until everything is well combined.
7. Add Cheese: Stir in half of the cheddar and mozzarella cheese, ensuring it melts into the mixture.
8. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it evenly.
9. Top with Cheese: Sprinkle the remaining cheddar and mozzarella cheese over the top. Add grated Parmesan cheese for an extra cheesy finish.
10. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden brown.
11. Cool: Remove from the oven and let it cool for about 5-10 minutes before serving.
12. Garnish: Sprinkle chopped fresh parsley on top for a pop of color and freshness.

By following these steps, you’ll create a savory and cheesy dish that is sure to impress.