Company Onion Soup
["4 Tbsp. unsalted butter", "4 large sweet or Walla Walla onions, sliced", "1 Tbsp. sugar", "6 c. beef broth, divided", "2 Tbsp. Worcestershire sauce", "salt and pepper to taste", "4 thick slices French bread", "additional unsalted butter", "garlic salt or 1 garlic clove, halved", "1 c. (4 oz.) shredded Gruyere or Swiss cheese"]
["In a Dutch oven, melt butter over medium heat. Saute onions until tender. Sprinkle sugar over onions. Reduce heat and cook, stirring occasionally, until onions are caramelized, about 20 minutes. Add 3 cups broth; simmer 15 minutes. Add remaining broth, Worcestershire sauce, salt and pepper. Cover and simmer for 30 to 40 minutes."]
["unsalted butter", "sweet", "sugar", "beef broth", "Worcestershire sauce", "salt", "bread", "additional unsalted butter", "garlic", "Gruyere"]