Cheesy Hamburger Potato Casserole - This easy casserole recipe combines ground beef, cheese, and potatoes, reminiscent of a hearty potato au gratin or cheesy scalloped potatoes with hamburger. Simple and comforting, this Hamburger Potato Casserole is sure to have everyone rushing to the table! 1.5 pounds ground beef1 yellow onion (finely diced)4 pounds russet potatoes
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