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–+ servings
slow cooker onion soup

Basic French Onion Soup

Diana
French onion soup is a classic soup showing that even the simplest of ingredients can be transformed into a dish that never goes out of style.
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Servings 6 servings
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Course Soups
Cuisine French
Prep Time 15 minutes
Cook Time 45 minutes

Ingredients
  

  • 2 cups sliced onions
  • 2 tablespoons vegetable oil
  • 1 tablespoon butter
  • 1 tablespoon cornstarch
  • 5 cups beef stock, preferably unsalted
  • kosher salt and freshly ground black pepper, to taste
  • 6 thick slices toasted French bread
  • 1 cup shredded Gruyere cheese

Instructions

  • Place a Dutch oven or large saucepan over medium heat. Heat the vegetable oil and butter until the butter has melted. Add the onions and cook until soft and caramelized, stirring frequently.  This will take about 15 to 20 minutes. Turn the heat down and add a splash of water if the onions begin scorching or sticking to the pan.
  • Add the cornstarch and stir until well blended. Gradually add the beef stock. Taste and add salt and pepper, as needed. Bring to a boil. Reduce the heat to low and simmer, uncovered, for about 20 to 30 minutes.
  • Preheat the broiler.
  • Ladle the soup into oven-safe bowls. Place a slice of toasted French bread on each serving and top with a generous amount of shredded cheese.
  • Place the bowls on a baking sheet and broil just until the cheese is melted and bubbly.
Keyword french food, onion soup, onions
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