Ingredients

  • Olive oil
  • 3 pounds red onions, peeled, sliced 1/8-inch thick
  • Salt and pepper
  • 1 cup dry red wine
  • 2 bay leaves
  • 1 small bunch thyme, tied with string
  • 8 garlic cloves, roughly chopped
  • 2 tablespoons brandy (optional)
  • 6 slices day-old bread, lightly toasted
  • 6 ounces grated Gruyere
  • 1 teaspoon chopped thyme
  • 1 tablespoon chopped sage

Method

  • Set 2 large, wide skillets over medium-high heat.
  • When pans are hot, add 1 tablespoon oil and a large handful of sliced onions to each pan.
  • Season onions with salt and pepper, then saute, stirring occasionally, until they are a ruddy dark brown, about 10 minutes
  • Transfer onions to soup pot and return pans to stove.
  • Pour 1/2 cup water into each pan to deglaze it, scraping with a wooden spoon to dissolve any brown bits.
  • Pour deglazing liquid into soup pot.
  • Wipe pans clean with paper towel and begin again with more oil and sliced onions.
  • Continue until all onions are used.
  • Dont crowd pans or onions wont brown sufficiently.
  • Place soup pot over high heat.
  • Add wine, bay leaves, thyme bunch and garlic.
  • Simmer rapidly for 5 minutes, then add 8 cups water and return to boil.
  • Turn heat down to maintain a gentle simmer.
  • Add 2 teaspoons salt.
  • Cook for 45 minutes.
  • Skim off any surface fat, taste and adjust seasoning.
  • (May be prepared to this point up to 2 days in advance.)
  • To serve, add brandy to soup, if using, and simmer 5 minutes.
  • Remove the thyme.
  • Make the cheese toasts: Heat broiler.
  • Place toasted bread on baking sheet.
  • Mix grated cheese with chopped thyme and sage, along with a generous amount of pepper.
  • Heap about 1 ounce of cheese mixture on each toast.
  • Broil until cheese bubbles and browns slightly.
  • Ladle soup into wide bowls and top with toast.