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A bowl of leek mushroom soup on a purple serviet.

Leek Mushroom Soup with Bacon & Thyme

Warm up with this rich and flavorful leek mushroom soup recipe. Lightly thickened, with sautéed leeks, mushrooms, and optional bacon — cozy, elegant, and easy to make.
Prep Time 10 minutes
Cook Time 10 minutes
Total Time 20 minutes
Course Appetizer
Cuisine French
Servings 4 people
Calories 268 kcal

Equipment

  • knife
  • cooking pan
  • saucepan

Ingredients
  

  • 1 yellow onion (finely chopped)
  • 1 leek (white and pale green parts), cleaned and sliced into rings
  • 8 oz mushrooms (cremini or chestnut), sliced
  • 3 tablespoon unsalted butter
  • 3 tablespoon all-purpose flour
  • 3 cups stock (mushroom, chicken or vegetable)
  • 1 tablespoon fresh thyme leaves (or 1 teaspoon dried)
  • 3 oz cooked bacon bits or chopped bacon (optional)
  • Salt & freshly ground black pepper (to taste)

Instructions
 

  • Crisp up bacon: In a large soup pot or Dutch oven, cook bacon bits (if using) until crispy. Remove and set aside, leaving some fat in the pot.
  • Sautée veggies: Add onion, leek, mushrooms, and thyme to the pot. Sauté over medium heat until the vegetables soften and the mushrooms give off moisture, about 5-10 minutes.
  • Make roux: In a separate saucepan, melt butter over low heat. Stir in flour to form a roux, whisking constantly for about 1 minute.
  • Add stock: Gradually pour stock into the roux, keep whisking to avoid lumps.
  • Add the filling: Add the sautéed vegetables (and bacon bits) into the broth. Stir, bring to a gentle simmer, and cook a few minutes until slightly thickened.
  • Serve: Season with salt and pepper. Serve warm, topped with reserved bacon bits and fresh thyme if desired.
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Notes

  • Omit bacon for a vegetarian version.
  • For extra creaminess, stir in a splash of cream at the end.