-
In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic. Sauté for 2 minutes until softened and fragrant.
-
Add the ground beef to the skillet. Cook for 5-7 minutes, breaking up the meat with a wooden spoon as it browns. Cook until no pink remains.
-
Drain excess fat from the beef mixture. Transfer browned beef mixture to a 6-quart slow cooker.
-
Add the condensed cream of mushroom soup, milk, salt, pepper and Worcestershire sauce to the slow cooker. Stir well to combine.
-
Arrange a layer of the sliced potatoes over the beef mixture, overlapping slightly.
-
Repeat layers with the remaining potatoes and beef mixture.
-
Cover slow cooker with lid. Cook on Low for 6-7 hours, until potatoes are fork tender.
-
During the last 30 minutes of cook time, sprinkle the shredded cheddar cheese evenly over the top. Re-cover and continue cooking until cheese is melted.
-
Serve hot, garnished with chopped parsley if desired. Enjoy!