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Caramelized Onion Soup Au Gratin

Here's how you make Caramelized Onion Soup Au Gratin
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  • Servings: 6
  • Prep: 10m
  • Cook: 1h
    • The following recipe serves 6 people.

Ingredients

The ingredients are:
  • 3 large yellow onions, sliced thin
  • 1/4 pound unsalted butter (1 stick)
  • 2 tablespoons oil (olive oil)
  • 2 tablespoons granulated sugar
  • 1 teaspoon kosher salt
  • 1/2 teaspoon pepper
  • Beef consomme (4 cans)
  • 1/4 cup red wine (I use a Cabernet)
  • 1/4 cup balsamic vinegar
  • 1 teaspoon dried thyme leaves
  • 1/4 teaspoon cayenne pepper
  • 1/8 teaspoon celery seed
  • 6 bread slices (toasted French bread cut to fit into soup bowls)
  • 6 Swiss cheese slices (may use provolone)
  • 1/4 cup grated Parmesan cheese
We recommend you get your ingredients ready before you start cooking. Once you're ready, here are the steps to making this delicious recipe

How to Make

  • Step 1: Cut onions in half and slice thinly.

  • Step 2: In a 4 quart dutch oven (or stock pot)melt butter with olive oil. Add sliced onions and sprinkle with the sugar, salt and pepper.

  • Step 3: Cook over medium low heat until caramelized and golden. This will take about 30 minutes.

  • Step 4: Add beef consomme, red wine, balsamic vinegar, cayenne pepper,thyme leaves and celery seed.

  • Step 5: Slow simmer for 30 minutes.

  • Step 6: Ladle into buttered oven proof soup bowls.Place bowls on a baking sheet.

  • Step 7: Top with toasted French bread, Swiss cheese and sprinkle with Parmesan cheese.

  • Step 8: Bake 5 minutes at 425 degrees. Broil 1 minute or until cheese is golden. Watch carefully as this can burn quickly.

We hope you enjoy this recipe!

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