Welcome to a recipe that transforms the humblest of ingredients into a bowl of pure comfort and elegance! Onion soup, a timeless classic, is famous for its deeply savory and sweet flavor, achieved by slowly caramelizing onions to perfection. In this special version, we're adding earthy wild mushrooms to create an even richer and more complex taste profile. Imagine a velvety, aromatic broth, tender onions, and flavorful mushrooms, all crowned with a crispy, cheesy crouton. This Onion Soup with Mushrooms is the perfect dish for a cozy evening, a sophisticated starter for a dinner party, or whenever you crave something truly satisfying. Let's get cooking!
Onion Soup with Mushrooms
Ingredients for Onion Soup with Mushrooms
- 700 g yellow onions
- 30 g butter
- 25 g vegetable oil
- 250 g frozen wild mushrooms
- 1 L chicken broth or water
- 100 ml dry white wine
- 1 tsp dried thyme
- sea salt to taste
- white bread and cheese for croutons
How to Make Onion Soup with Mushrooms
Peel the onions and slice them into thin rings.
Cook over medium heat for about 10 minutes.
Then, remove the lid and cook the onions for about 40 minutes over low heat, stirring occasionally.
Peel the onions and slice them into thin rings. The thinner you slice them, the better. A mandoline slicer can help you quickly chop a kilogram of onions without shedding a tear. Pour vegetable or olive oil into a large, deep skillet, like a wok. Add the sliced onions. Add the butter. Sprinkle in 1 teaspoon of sea salt. The type of onion matters in this recipe; the sweeter, the tastier.
Cover the skillet with a lid. Cook over medium heat for about 10 minutes. During this time, the onions will steam, and the salt will draw out their moisture.
Next, remove the lid and cook the onions for about 40 minutes over low heat, stirring occasionally. For onion soup, you don’t want to turn the onions into fried crisps! You need to simmer them slowly and prevent them from browning too quickly.
About 10-15 minutes before they are done, pour in the dry white wine and let it evaporate.
About 10-15 minutes before they are done, pour in the dry white wine and let it evaporate. You can increase the heat at this stage. The onions for the soup are ready when they have almost turned into a thick, light caramel-colored jam. You can substitute the dry white wine with apple cider for a delicious alternative.
Add the wild mushrooms.
Pour in 1 liter of chicken broth or boiling water.
While the soup is simmering, let's toast the croutons.
Add the wild mushrooms. I boil my mushrooms for 15 minutes, chop them finely, and freeze them in a zip-lock bag. This creates a flat block that can be used immediately when making soup or stew.
Sauté the mushrooms with the onions for a few minutes, then sprinkle in a teaspoon of dried thyme. Pour in 1 liter of chicken broth or boiling water. Salt to taste and bring to a boil. Cover with a lid and cook over low heat for 40 minutes. Instead of thyme, you can use a Mediterranean herb mix, which is a versatile ready-made seasoning.
While the soup is simmering, let’s make the croutons. Cut white bread into small, bite-sized pieces. Slice the cheese into pieces that fit the croutons. Grease a skillet with olive or vegetable oil and toast the bread until golden brown. Place the cheese on top, cover the skillet with a lid, and cook for 1-2 minutes until the cheese is melted.
Pour the onion soup with mushrooms into a bowl. Top with the croutons with melted cheese and serve immediately.
Pour the onion soup with mushrooms into a bowl. Top with the croutons with melted cheese and serve immediately. You’ve never tasted a soup this delicious!
And there you have it – a bowl of Onion Soup with Mushrooms that is sure to warm your heart and delight your taste buds. The magic of this dish lies in its simplicity and the depth of flavor developed through patience and care. Don't hesitate to experiment with different cheeses like Gruyère, Emmental, or even a sharp cheddar for the croutons. This soup is best enjoyed hot, straight from the kitchen, allowing the melted cheese to stretch with every spoonful. We hope you enjoy making and sharing this wonderful recipe. It’s a beautiful reminder that sometimes, the most memorable meals come from the simplest ingredients.
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