01 - Heat a large skillet over medium heat. Add ground beef and diced onion, cooking until meat is no longer pink. Drain excess fat thoroughly.
02 - Transfer the browned beef mixture to the bottom of your slow cooker insert.
03 - Arrange diced potatoes, drained kidney beans, corn, and diced tomatoes with their juices in even layers over the beef base.
04 - Whisk together the condensed mushroom soup, beef broth, smoked paprika, garlic powder, oregano, black pepper, and salt in a small bowl until smooth.
05 - Pour the seasoned soup mixture evenly over all ingredients in the slow cooker. Cover with lid and cook on LOW setting for 6 hours until potatoes are fork-tender.
06 - During the final 15 minutes of cooking, sprinkle shredded cheddar cheese across the top. Cover and allow cheese to melt completely before serving.
07 - Ladle hot portions into bowls and garnish with fresh chopped parsley or sliced green onions if desired.