01 -
Heat butter or margarine in a medium skillet over medium heat. Add chopped onions and cook until softened and translucent, about 3 to 5 minutes.
02 -
Transfer sautéed onions to the crock pot. Add the condensed cream of chicken soup, whole milk, and processed cheese cubes. Stir gently to distribute ingredients evenly.
03 -
Cover and cook on low setting for 4 hours, stirring occasionally, until the cheese is fully melted and the soup is smooth and creamy.
04 -
Ladle the hot soup into bowls. Optionally, sprinkle with extra shredded cheese or freshly chopped herbs before serving.