Creating this Tuna Casserole is straightforward. Follow these steps for a delicious meal:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Noodles: In a large pot, bring water to a boil and cook the egg noodles according to package instructions until al dente. Drain and set aside.
3. Mix Ingredients: In a large mixing bowl, combine the drained tuna, frozen peas and carrots, cream of mushroom soup, milk, garlic powder, and salt and pepper. Stir until well mixed.
4. Add Noodles: Fold in the cooked egg noodles to the mixture, ensuring they are evenly coated.
5. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it evenly.
6. Add Cheese: Sprinkle the shredded cheddar cheese over the top of the casserole.
7. Prepare Breadcrumbs: In a small bowl, mix the breadcrumbs with olive oil until moistened. Sprinkle over the cheese layer.
8. Bake: Place in the preheated oven and bake for 25-30 minutes or until the casserole is bubbly and the breadcrumbs are golden brown.
9. Garnish: Remove from the oven and let it cool for a few minutes. Garnish with chopped parsley if desired.

These simple steps will guide you in creating an incredible Tuna Casserole that will impress everyone at your table.