In a large skillet over medium heat, add 1 pound of ground beef and 1 chopped onion. Cook until the beef is browned and fully cooked, about 5-7 minutes.

Wash and thinly slice about 4 medium potatoes to approximately 1/8-inch thick.

In your crockpot, layer half of the sliced potatoes, then half of the beef mixture, followed by a sprinkle of cheddar cheese. Repeat with remaining ingredients.

In a mixing bowl, whisk together 1 can of cream of mushroom soup, 1 cup of milk, 1 teaspoon of garlic powder, and a pinch of salt and pepper until smooth.

Cover your crockpot and set it to cook on low for 6 to 8 hours.

In the last 15 minutes of cooking, remove the lid and add remaining cheddar cheese on top. Cover again to melt.