Creating Hobo Casserole with Ground Beef & Potatoes is straightforward if you follow these simple steps:

1. Preheat your oven to 350°F (175°C).
2. Brown the Beef: In a large skillet over medium heat, cook the ground beef until browned. Drain excess fat and set aside.
3. Sauté Onions: In the same skillet, add the diced onion and cook until translucent.
4. Mix the Ingredients: In a large bowl, combine the cooked beef, sautéed onions, frozen mixed vegetables, cream of mushroom soup, milk, garlic powder, salt, and black pepper. Stir well to combine.
5. Layer the Potatoes: In a greased 9×13 inch baking dish, layer half of the sliced potatoes evenly at the bottom.
6. Add the Meat Mixture: Pour the meat and vegetable mixture over the first layer of potatoes, spreading it out evenly.
7. Add Final Layer: Top with the remaining sliced potatoes, covering the meat mixture.
8. Cover the Dish: Tightly cover the baking dish with aluminum foil. This will keep the casserole moist as it cooks.
9. Bake in the Oven: Place in the preheated oven and bake for 40 minutes.
10. Add Cheese: Remove the foil, sprinkle shredded cheese over the top, and return to the oven. Bake uncovered for an additional 5-10 minutes, or until the cheese is melted and bubbly.
11. Garnish and Serve: Once cooked, let it cool slightly, then garnish with fresh parsley if using.

Following these steps will guide you to create an incredible Hobo Casserole that will impress your family and friends with its robust flavors.