01 -
Preheat the oven to 350°F (175°C).
02 -
In a large skillet, cook 1½ lbs ground beef until browned, then drain excess fat.
03 -
(Optional) Sauté chopped onions and minced garlic in olive oil until soft.
04 -
Mix cooked beef with onions, garlic, salt, and pepper.
05 -
In a separate bowl, mix condensed cream of mushroom soup with milk until smooth.
06 -
In a greased 9x13-inch dish, layer half of the sliced potatoes, then half of the beef mixture, and pour half of the soup mixture over. Repeat layers.
07 -
Top with 2 cups of shredded cheddar cheese.
08 -
Cover with foil and bake for 1 hour. Remove the foil and bake for an additional 15 minutes, until golden.
09 -
Let rest for a few minutes before serving.