Brown the ground beef in a large skillet over medium heat. Add the diced onion and minced garlic and cook until the onion softens.
In a mixing bowl, stir together the cream of mushroom soup, beef broth, salt, black pepper, and paprika until smooth.
Lightly grease the slow cooker insert. Layer half the sliced potatoes in the bottom, followed by half the beef mixture and half the soup mixture. Repeat with the remaining potatoes, beef, and soup mixture.
Cover and cook on low for 6 to 7 hours until the potatoes are fork-tender.
Sprinkle the shredded cheddar cheese evenly over the top. Cover again and cook on low for 20 to 30 more minutes until the cheese melts.