01 -
Cut the potatoes into thin slices, around ⅛ inch thick. Leave them soaking in water so they don’t turn brown while you work on the other parts.
02 -
Turn your oven to 350°F and get a 9x13 baking dish ready by coating it lightly with nonstick spray.
03 -
On medium-high heat, cook the ground beef along with onions and garlic in a big pan or Dutch oven. Stir as it cooks and drain off the extra grease.
04 -
In a mixing bowl, blend together the mushroom soup, half-and-half, onion powder, salt, and black pepper until smooth.
05 -
Pour off the water from the potato slices and start building layers in the baking dish. Add ⅓ of the potato slices first, then ⅓ of the ground beef, ¾ cup of cheese, and ⅓ of the soup mixture.
06 -
Keep layering in the same way two more times. For the top layer, use the remaining 1½ cups of cheese to finish things off.
07 -
Cover the dish tightly with foil and bake it in the oven for 1 hour and 10 minutes. Take the foil off, then bake it another 20 minutes until the cheese is golden and bubbly.
08 -
Let it sit for about 15 minutes after pulling it out of the oven. This gives it time to cool enough to serve.