01 -
Preheat oven to 375°F. Lightly grease a 9×13-inch baking dish. Peel and slice potatoes evenly into thin rounds to ensure consistent cooking.
02 -
In a large skillet over medium heat, cook ground beef and chopped onion until beef is no longer pink and onions are tender, about 5–7 minutes. Drain excess fat.
03 -
Stir in garlic powder, onion powder, salt, and black pepper. Combine thoroughly to evenly distribute seasonings.
04 -
Arrange half of the sliced potatoes in an even layer in the prepared dish. Spread half of the beef mixture over potatoes. Repeat layering with remaining potatoes and beef.
05 -
In a small bowl, mix cream of mushroom soup with milk until smooth. Pour the sauce mixture evenly over layered ingredients, ensuring coverage of all sections.
06 -
Sprinkle shredded cheddar cheese evenly over casserole. Drizzle melted butter across the top. Optionally, dust with paprika for color.
07 -
Cover baking dish with aluminum foil. Bake for 45 minutes. Uncover and continue baking for an additional 15 minutes until potatoes are tender and cheese is bubbling and golden.
08 -
Remove from oven and let stand for 5–10 minutes to set. Serve warm, scooping generous portions.