Rich Caramelized Onion and Mushroom Soup Recipe

If you’re a fan of specialty soups, this Caramelized Onion and Mushroom Soup will quickly become a favorite. The deep, sweet flavors of caramelized onions perfectly complement the earthy richness of mushrooms, creating a bowl of comfort that warms your soul.

Imagine sitting by a cozy fire, savoring a hot bowl of this delicious soup. The enticing aroma fills the air, making it hard to resist. This recipe is perfect for chilly evenings or when you want to impress guests with a sophisticated yet simple dish.

The Ultimate Comfort in a Bowl

A bowl of caramelized onion and mushroom soup garnished with cream and parsley, accompanied by crusty bread.

This Caramelized Onion and Mushroom Soup is a delightful blend of sweet and savory flavors. It features slow-cooked onions for a natural sweetness combined with the umami goodness of mushrooms, resulting in a rich, velvety texture that is satisfying and nourishing.

Ingredients

4 large onions, thinly sliced
8 ounces mushrooms, sliced (such as cremini or button)
4 cloves garlic, minced
4 cups vegetable or chicken broth
2 tablespoons olive oil
2 tablespoons butter
1 teaspoon thyme (dried or fresh)
Salt and black pepper to taste
1/2 cup heavy cream (optional)
Fresh parsley for garnish (optional)

Instructions

Sauté Onions: In a large pot, heat olive oil and butter over medium heat. Add the sliced onions and a pinch of salt. Cook slowly, stirring occasionally, for about 25-30 minutes until the onions are deeply caramelized and golden brown.
Add Mushrooms: Stir in the sliced mushrooms and cook for an additional 5-7 minutes, until they soften and release their moisture.
Flavor It Up: Add minced garlic and thyme to the pot, cooking for another minute until fragrant.
Pour in Broth: Add the broth, bring to a simmer, and let cook for 15-20 minutes to allow the flavors to meld. Season with salt and pepper to taste.
Blend (Optional): For a creamy texture, use an immersion blender or transfer to a blender to puree the soup until smooth. If you prefer a chunky texture, you can skip this step.
Stir in Cream: If using, stir in the heavy cream to add richness to the soup. Heat gently without boiling.
Serve: Ladle the soup into bowls and garnish with fresh parsley, if desired. Enjoy hot with crusty bread on the side.