Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: peel the onions and slice into fine rings. heat the butter in a large pan, add onion and cook slowly over low heat for about 20 minutes, or until very tender. add the sugar and flour and cook, stirring, for another 1-2 minutes until mixture is starting to turn golden. stir in stock and simmer, covered, over low heat for 1 hour. season with salt and pepper. preheat oven to moderate 350 degrees. cut bread sticks into 1/2 inch slices. bake 20 minutes, turning once, until the slices are dry and golden. top each slice with some grated cheese and place under hot grill until cheese has melted. serve soup topped with toasted cheese croutons.

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.