Sautéed cremini or button mushrooms provide a deep umami base for this silky, one-pot cream soup. Fresh thyme and garlic are simmered into a combination of chicken broth and heavy cream to create a velvety texture and a rich, earthy aroma. Served hot with a sprinkle of extra herbs, the soup offers a comforting, savory profile that moves directly from stovetop to table.

About This Recipe

Developing a golden-brown color on the mushrooms in melted butter ensures their flavor is fully concentrated before the aromatics are introduced. Once the onion and garlic have softened, the chicken broth and fresh thyme are added to the pot to establish a fragrant, savory liquid. Incorporating the heavy cream during the final simmer allows the soup to reach a thick, spoon-coating consistency without the need for flour or starches.

The flavor profile features an earthy and robust character, where the woody notes of the thyme enhance the natural saltiness of the mushrooms. Heavy cream provides a dense, buttery richness that balances the sharp aromatic depth of the minced garlic. As the mixture reduces over medium heat, the ingredients integrate to create a steady, savory flavor throughout the dish.

The mushroom and thyme soup is served in deep bowls, offering a rustic presentation that can be left chunky or partially blended for a smoother finish. Because the recipe relies on a single-pot method, the savory juices from the browned mushrooms are trapped directly within the cream base for maximum intensity. The final result is a vibrant, multi-layered meal that focuses on the interplay between the tender vegetable pieces and the herb-infused broth, offering a straightforward and warming keto-friendly dinner.


Why You’ll Love This Recipe

  • One-pot and easy
  • Deep mushroom flavor
  • Rich, creamy, and comforting
  • Naturally keto and low-carb
  • Perfect for meal prep
  • Customizable texture (chunky or blended)
  • Fast weeknight soup
  • Great for cold weather

What You’ll Need for This Mushroom & Thyme Cream Soup

For the Soup

  • 2 tbsp butter
  • 1 lb mushrooms, sliced (button or cremini)
  • 1/2 small onion, diced
  • 3 cloves garlic, minced
  • 4 cups chicken or vegetable broth
  • 1 cup heavy cream
  • 1 tsp fresh thyme leaves (or 1/2 tsp dried)
  • 1/2 tsp salt
  • 1/4 tsp black pepper

Optional Enhancements

  • 2 oz cream cheese (extra creaminess)
  • Additional thyme for garnish

Step-by-Step Preparation

  1. In a large pot, melt butter over medium heat.
  2. Add mushrooms and sauté 6–8 minutes until browned and softened.
  3. Add onion and garlic; cook 2–3 minutes until fragrant.
  4. Pour in broth and add thyme, salt, and pepper. Bring to a gentle simmer.
  5. Stir in heavy cream and optional cream cheese.
  6. Simmer 8–10 minutes until thickened.
  7. Optional: Blend part of the soup for a creamier texture.
  8. Serve hot with extra thyme on top.

FAQ

  • Q: Can I blend the whole soup?
    A: Yes, for a smooth puree. Blending half gives the best texture balance.
  • Q: Can I use different mushrooms?
    A: Cremini, baby bella, shiitake, and button mushrooms all work well.
  • Q: Can I freeze it?
    A: Cream soups can separate when frozen — not recommended.
  • Q: How can I make it thicker?
    A: Add cream cheese or simmer longer to reduce.
  • Q: Can I make it dairy-free?
    A: Not recommended — cream is essential to this soup’s texture.

Variations & Substitutions

  • Add cream cheese for extra richness
  • Use mixed mushrooms for deeper flavor
  • Add spinach at the end
  • Stir in Parmesan for extra savory notes
  • Add chili flakes for heat
  • Substitute thyme with rosemary or sage

Serving Suggestions

  • Serve with keto garlic bread
  • Pair with a simple green salad
  • Enjoy as a cozy standalone lunch
  • Add grilled chicken on top for protein

Keto Mushroom & Thyme Cream Soup (One Pot)

Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings 6 Servings
Calories 210
A rich, creamy keto mushroom soup infused with thyme — warm, savory, and made in one pot.

Ingredients

For the Soup

  • 2 tbsp butter
  • 1 lb mushrooms (sliced (button or cremini))
  • 1/2 small onion (diced)
  • 3 cloves garlic (minced)
  • 4 cups chicken or vegetable broth
  • 1 cup heavy cream
  • 1 tsp fresh thyme leaves (or 1/2 tsp dried)
  • 1/2 tsp salt
  • 1/4 tsp black pepper

Optional Enhancements

  • 2 oz cream cheese (extra creaminess)
  • Additional thyme for garnish

Instructions 

  • In a large pot, melt butter over medium heat.
  • Add mushrooms and sauté 6–8 minutes until browned and softened.
  • Add onion and garlic; cook 2–3 minutes until fragrant.
  • Pour in broth and add thyme, salt, and pepper. Bring to a gentle simmer.
  • Stir in heavy cream and optional cream cheese.
  • Simmer 8–10 minutes until thickened.
  • Optional: Blend part of the soup for a creamier texture.
  • Serve hot with extra thyme on top.
Calories: 210kcal
Course: Soup
Cuisine: American
Keyword: Keto mushroom soup, low carb soup recipe, thyme cream soup

Did you make this recipe?


I’d love to hear from you — leave a comment below and tell me how it turned out, what you liked, or if you made any tweaks!

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Author

I share simple, everyday recipes that I cook in my own kitchen, focused on food that's easy, satisfying, and realistic for busy routines.

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