Onion Soup

10 ingredients
13 steps

Ingredients

  • 4 tablespoons (1/2 stick) butter
  • 4 large onions, thinly sliced (about 6 cups)
  • 5 cups beef or chicken stock, preferably homemade (page 160), warmed
  • 2 or 3 fresh thyme sprigs or a pinch of dried
  • 2 or 3 fresh parsley sprigs
  • 1 bay leaf
  • Salt and black pepper to taste
  • 2 tablespoons cognac or other brandy, optional
  • 4 croutons (page 580), made with bread slices and butter instead of oil
  • 1 cup freshly grated Parmesan cheese

Directions

  1. 1
    Melt the butter in a large, deep saucepan or casserole over medium heat.
  2. 2
    Add the onions and cook, stirring occasionally, until very soft and just beginning to brown, 30 to 45 minutes.
  3. 3
    Adjust the heat so they do not brown too fast but rather slowly turn into a melting mass.
  4. 4
    Preheat the oven to 400F.
  5. 5
    Add the stock, turn the heat to medium-high, and bring just about to a boil.
  6. 6
    Turn down the heat so that the mixture sends up a few bubbles at a time.
  7. 7
    Add the herbs, bay leaf, salt, pepper, and cognac and cook for 15 minutes.
  8. 8
    Fish out the bay leaf and herb sprigs, if any.
  9. 9
    (You may prepare the soup in advance up to this point; cover and refrigerate for up to 2 days, then reheat before proceeding.)
  10. 10
    Place a crouton in each of 4 ovenproof bowls.
  11. 11
    Add soup and top with cheese.
  12. 12
    Place the bowls in a roasting pan or on a sturdy cookie sheet and bake for 5 to 10 minutes, just long enough to melt the cheese.
  13. 13
    Serve immediately.

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