Now that you have your ingredients ready, follow these simple steps to prepare Hobo Casserole Ground Beef:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Brown the Beef: In a large skillet, cook the ground beef over medium heat. Add the diced onion and sauté until the beef is browned and the onions are translucent.
3. Combine Vegetables: Stir in the frozen mixed vegetables and cook for an additional 5 minutes, until they are heated through.
4. Add Seasonings: Sprinkle in the garlic powder, salt, black pepper, and Worcestershire sauce. Mix thoroughly to distribute the seasonings evenly throughout the mixture.
5. Incorporate Soup: Stir in the cream of mushroom soup, mixing it well with the beef and vegetable combination.
6. Layer the Potatoes: In a greased 9×13 inch baking dish, layer the diced potatoes evenly on the bottom.
7. Add the Beef Mix: Spread the beef and vegetable mixture over the potatoes evenly.
8. Top with Cheese: Sprinkle the shredded cheddar cheese on top of the casserole.
9. Cover and Bake: Cover the baking dish with aluminum foil and place it in the preheated oven. Bake for 30 minutes.
10. Uncover and Finish Baking: After 30 minutes, remove the foil and continue baking for an additional 10 minutes until the cheese is melted and bubbly and the potatoes are tender.
11. Garnish and Serve: Once out of the oven, let the casserole cool for a few minutes. If desired, garnish with fresh parsley before serving.

These straightforward steps ensure that anyone can master this delicious Hobo Casserole Ground Beef, regardless of cooking experience.