The key to perfect onion soup is allowing the natural sugars in the onions to infuse the beef broth with sweetness. The Instant Pot® does that in a fraction of the time of the traditional cooking method for this French favorite.
PREP TIME: 25 minutes
FUNCTION: Sauté (Normal); Soup/Broth
CLOSED POT TIME: 50 minutes
TOTAL TIME: 1 hour 15 minutes + 5 minutes bake
RELEASE: Quick
SERVES: 4 to 6
PREP
For the croutons, preheat oven to 375°F. Place bread cubes in a large mixing bowl; drizzle with olive oil and toss to evenly distribute. Place on a foil-lined baking sheet that has been sprayed with nonstick cooking spray. Sprinkle with garlic powder. Set aside.
For the soup, select sauté on the Instant Pot® and adjust to normal. Add 2 tablespoons olive oil to the pot. When hot, add onions and salt. Sauté for 3 minutes, stirring frequently. Add sherry and cook for an additional 4 minutes. Press cancel. Add beef broth, thyme, and bay leaf. Secure the lid on the pot. Close the pressure-release valve.
COOK
Select soup/broth. When cooking is complete, use a quick release to depressurize.
SERVE
Combine both types of cheese and sprinkle over bread cubes. Bake for 5 to 7 minutes until cheese is melted and bubbly. Season soup with salt and pepper to taste. Divide soup among bowls. Top with warm cheese croutons.