1. Preheat the oven to 375°F (190°C) to ensure even cooking.
2. Peel and slice russet potatoes into evenly sized rounds or cubes for uniform cooking.
3. In a skillet, brown the ground beef over medium heat and add diced onions, cooking until translucent. Drain excess fat.
4. Stir in salt, pepper, onion powder, and garlic powder into the beef mixture to enhance flavor.
5. Grease a baking dish and begin layering the ingredients by starting with a layer of potatoes, followed by the meat mixture, then shredded cheese. Repeat layers until ingredients deplete, finishing with a cheese layer.
6. In a separate bowl, mix cream soup and evaporated milk, then pour the mixture evenly over the layered ingredients to achieve a creamy consistency.
7. Cover the baking dish with aluminum foil to assist in cooking the potatoes thoroughly.
8. Bake the covered casserole in the preheated oven for 50-60 minutes.
9. Remove the foil and continue baking for an additional 15 minutes to allow the cheese on top to melt and brown.
10. Insert a fork into the potatoes to check for doneness; if the fork goes through easily, the casserole is ready.
11. Let the casserole cool for a few minutes before serving.
12. For an optional touch, pair with a fresh salad, steamed vegetables, or any side dish of your choice.
13. Enjoy your Easy Hamburger Potato Casserole with friends and family.