Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: cook onions in butter, covered in dutch oven, about 30 minutes or until lightly browned. add broth and worcestershire sauce; bring to boil. ladle soup into oven proof bowls and top with bread slices. sprinkle bread with cheeses; place under broiler till cheese is lightly browned.

Target recipe: in a large skillet, sauté onions in butter until crisp-tender. transfer to an ungreased 5-quart slow cooker/crock pot. add the broth, worcestershire sauce, and bay leaves. cover and cook on low for 5 to 7 hours or until the onions are tender. discard bay leaves. top each serving with french bread and cheeses.