Slow Cooked French Onion Soup

By: Instant Pot Culinary Team

Slow Cooked French Onion Soup
cuisine icon Cuisine
French
cuisine icon Course
Dinner, Lunch, Soup
cuisine icon Difficulty
Easy
cuisine icon Duration
more than 2 hours
cuisine icon Cooking Technique
Air Fryer Lid, Broil, Sauté, Slow Cook
cuisine icon Keywords
6-8 servings, air fryer lid, bay leaf, beef broth, black pepper, broil, cook 4 hour, dinner, dry white wine, easy, french, french bread, Instant Pot Culinary Team, lunch, more than 2 hours, prep 20 min, red wine, salt, sauté, sea salt, shredded gruyere cheese, slow cook, soup, soy sauce, springs fresh thyme, sugar, sweet onions, tomato paste, unsalted butter, worcestershire sauce

prep icon Prep Time
20 min
cook icon Cook Time
4 hour

serving icon Servings
6-8 servings
Ingredients
  • 6 sweet onions
  • 4 tbsp unsalted butter
  • 1/2 tsp salt
  • 1/4 tsp sugar
  • 4 springs fresh thyme
  • 1 bay leaf
  • 6 cups beef broth
  • 1/2 cup red wine
  • 1 tbsp tomato paste
  • 1 tbsp soy sauce
  • 1 tbsp Worcestershire sauce
  • 1/2 cup dry white wine
  • sea salt
  • black pepper
  • 6 slices French bread
  • 2 cups shredded gruyere cheese
Instructions
  • Select SAUTE-High, set the time for 10 minutes and press START.
  • Add the butter to the Inner Pot and let it melt; then stir in the onion, salt and sugar, and cook for about 3 minutes.
  • Press CANCEL to turn off sauté.
  • Add in the thyme and bay leaf, close the Pressure Cooking Lid on the pot and set to VENT. Select SLOW COOK-Custom-High for 3 hours. Stir the onions halfway through.
  • When done, carefully open the Pressure Cooking Lid. Stir in the Tomato paste, beef broth, red wine, soy sauce, Worcestershire sauce and dry white wine. Combine well.
  • Close the Pressure Cooking Lid on the pot and set to VENT. Select SLOW COOK-Custom-High for 1 hour.
  • When done, carefully open the Pressure Cooking Lid, remove and discard thyme and bay leaf. Season with salt and pepper to taste. 
  • Place the French bread on top of the soup and finish it with the shredded cheese.
  • Finally use the Air-Fry Lid, select BROIL-400 F and set the time for 8 minutes.
  • Serve and enjoy!
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