Add the Soup Ingredients: Add the frozen hashbrowns, diced ham, onion, celery, chicken broth, salt, black pepper, and garlic powder to the slow cooker. Stir until everything is evenly combined.
28 ounces frozen diced hashbrown potatoes, 2 cups cooked ham, ½ cup yellow onion, 2 celery stalks, 4 cups chicken broth, ¼ teaspoon salt, ¼ teaspoon black pepper, ¼ teaspoon garlic powder
Slow Cook Until Tender: Cover and cook on LOW for 4 to 5 hours, until the potatoes and celery are tender. Keep the lid closed as much as possible so the slow cooker maintains an even temperature.
Add the Cream Cheese: Add the softened cream cheese cubes and stir until the cheese melts into the broth and the soup becomes creamy. Cutting the cream cheese into small cubes helps it melt faster and more evenly.
8 ounces cream cheese
Melt in the Cheddar: Add the shredded sharp cheddar and stir until fully melted and evenly incorporated. Freshly shredded cheese will usually give you the smoothest texture.
8 ounces sharp cheddar cheese
Finish the Soup: Cover and continue cooking on LOW for another 30 minutes. Stir once or twice during this time, until the soup is hot, creamy, and slightly thickened.
Serve: Ladle the soup into bowls and top with chopped green onions. For the full loaded-potato treatment, add crumbled bacon, sour cream, extra cheddar, and more green onions.
2 tablespoons green onions, Cooked crumbled bacon, Sour cream, Extra shredded cheddar cheese, Extra chopped green onions