To make Beef Noodle Casserole, follow these straightforward steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Noodles: In a large pot, cook egg noodles according to the package instructions until al dente. Drain and set aside.
3. Brown the Beef: In a skillet over medium heat, add the ground beef, chopped onion, and minced garlic. Cook until the beef is browned and the onion is translucent. Drain excess fat if necessary.
4. Combine Ingredients: In a large bowl, mix together the browned beef, cooked noodles, cream of mushroom soup, sour cream, beef broth, Worcestershire sauce, oregano, salt, and pepper. Fold in optional peas and mushrooms if using.
5. Add Cheese: Stir in half of the shredded cheddar cheese, reserving the other half for topping.
6. Transfer to Casserole Dish: Pour the mixture into a greased 9×13-inch casserole dish, spreading it evenly.
7. Top with Cheese: Sprinkle the remaining cheddar cheese over the top.
8. Bake: Bake in the preheated oven for 30-35 minutes, or until bubbly and golden on top.
9. Cool: Let the casserole cool for about 5-10 minutes before serving to allow it to set.
10. Garnish: Optionally, garnish with fresh parsley for a pop of color before serving.

These steps will guide you in creating a Beef Noodle Casserole that is not only delicious but also visually appealing.