Brown the ground beef in a skillet over medium heat until fully cooked. Drain excess grease.
In a bowl, mix together the cooked ground beef, sliced potatoes, chopped onion, condensed cream of mushroom soup, shredded cheddar cheese, garlic powder, salt, and black pepper.
Transfer the mixture to a greased crockpot.
Cover and cook on low heat for 6-8 hours or until the potatoes are tender.
Serve hot, garnished with chopped fresh parsley if desired. Enjoy the comforting and hearty Crockpot Hamburger Potato Casserole straight from your slow cooker!
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