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Mushroom & Caramelized Onion Soup with Cheesy Toasties Recipe

Mushroom & Caramelized Onion Soup with Cheesy Toasties Recipe


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4.8 from 8 reviews

  • Author: Emma
  • Total Time: 1 hour 5 minutes
  • Yield: 6 servings 1x
  • Diet: Non-Vegetarian

Description

This Mushroom & Caramelized Onion Soup with Cheesy Toasties is a comforting and flavorful dish perfect for a cozy night in. The rich, savory soup paired with gooey, cheesy toasties is a winning combination that will warm you up from the inside out.


Ingredients

Scale

For the Soup:

  • 3 tablespoons olive oil
  • 2 large onions, thinly sliced
  • 1 teaspoon sugar
  • 1 pound cremini or button mushrooms, sliced
  • 3 cloves garlic, minced
  • 1 teaspoon fresh thyme or 1/2 teaspoon dried thyme
  • 1/2 cup dry white wine (optional)
  • 4 cups vegetable or beef broth
  • 2 tablespoons soy sauce
  • 1 teaspoon balsamic vinegar
  • Salt and black pepper, to taste

For the Cheesy Toasties:

  • 1 baguette, sliced
  • 2 cups shredded Gruyère or Swiss cheese
  • 2 tablespoons butter, softened

Instructions

  1. Sauté Onions: Heat olive oil in a large pot over medium-low heat. Add onions and sugar, cooking slowly for 20–25 minutes until deeply caramelized.
  2. Cook Mushrooms: Add mushrooms to the pot and cook for 8–10 minutes until they release their juices and brown.
  3. Add Flavor: Stir in garlic and thyme, cooking for an additional minute. Deglaze the pot with white wine if using.
  4. Simmer Soup: Add broth, soy sauce, and balsamic vinegar. Simmer uncovered for 20 minutes. Season with salt and pepper.
  5. Prepare Cheesy Toasties: Spread butter on baguette slices, top with cheese, and broil until bubbly and golden.
  6. Serve: Ladle soup into bowls and serve with cheesy toasties on the side or floating on top.

Notes

  • For extra richness, add a splash of cream at the end.
  • The cheesy toasties can be made with sourdough or rye bread for a heartier flavor.
  • Prep Time: 15 minutes
  • Cook Time: 50 minutes
  • Category: Soup, Main Course
  • Method: Stovetop, Broiling
  • Cuisine: French-Inspired

Nutrition

  • Serving Size: 1 bowl with toastie
  • Calories: 370
  • Sugar: 10 g
  • Sodium: 720 mg
  • Fat: 18 g
  • Saturated Fat: 8 g
  • Unsaturated Fat: 9 g
  • Trans Fat: 0 g
  • Carbohydrates: 38 g
  • Fiber: 4 g
  • Protein: 14 g
  • Cholesterol: 30 mg