Homemade French Onion Soup

ingredients  1x2x3x

• 3 large sweet onions peeled
• ⅓ cup unsalted butter
• ½ teaspoon brown sugar optional
• 8 cups beef broth 64 oz
• ⅓ cup dry white wine
• 3 sprigs fresh thyme or ½ teaspoon dry
• 1 bay leaf
• ¼ teaspoon pepper
• 1 tablespoon Worcestershire sauce
• 1 tablespoon dry sherry optional
• 1 baguette
• 3 cups gruyere cheese
• 6 tablespoons fresh parmesan cheese

instructions 

• Slice onions ¼” thick. Cook onions, stirring occasionally, over low heat in melted butter (with sugar if using) until golden, about 30-45 minutes.
• Add beef broth, wine, thyme, bay leaf, black pepper, Worcestershire, dry sherry. Bring to a boil, reduce heat and simmer for 1 hour. Remove bay leaf and thyme (if fresh) and discard.
• Meanwhile, slice bread and brush with olive oil. Broil 2 minutes per side or until golden. 
• Ladle soup into ceramic bowls. Add 2 slices of bread to each bowl. Divide cheeses over bowls and broil until golden and bubbly.