A rich and earthy low-carb soup featuring browned sausage and tender sliced mushrooms in a velvety cream cheese base. A high-fat, comforting meal designed for nutritional density and stable reheating without the use of starch-based thickeners or grains.
About This Recipe
Keto Creamy Sausage & Mushroom Soup focuses on the integration of savory fats and earthy aromatics to create a cohesive and nutritionally dense broth. Instead of utilizing a traditional flour-based roux or potato-based thickeners, this recipe relies on the emulsifying properties of full-fat cream cheese and heavy cream. This method ensures that the soup achieves a thick, velvety consistency that remains stable during the simmering process, providing a rich mouthfeel that adheres to the sausage and mushrooms without the risk of separation.
The ingredient logic centers on building layers of umami, starting with the browning of the pork sausage. By searing the protein first, the recipe utilizes the rendered fats to sauté the onions and mushrooms, allowing the vegetables to absorb the seasoned drippings. The mushrooms are cooked until their moisture has evaporated and they have achieved a light caramelization, which intensifies their flavor and prevents the soup from becoming watery. The addition of dried thyme and garlic provides a foundational herbal profile that complements the savory notes of the chicken broth and dairy components.
This soup is specifically designed for thermal stability and meal-prep efficiency, as the cream cheese acts as a secondary stabilizer that maintains the broth’s integrity through multiple reheating cycles. The high fat-to-carb ratio makes it an ideal option for those following a strict ketogenic framework, providing sustained satiety. Because the recipe relies on simple, low-moisture ingredients, the soup thickens naturally as it rests, delivering a professional-grade comfort food experience that remains reliable for both fresh service and advance preparation.
What You’ll Need for This Creamy Sausage & Mushroom Soup
- Thick and creamy without flour
- Rich sausage and mushroom flavor
- Keto and low-carb friendly
- High in protein and fat
- Perfect for meal prep
- Reheats without separating
- Cozy comfort food
Step-by-Step Preparation
- 1 lb pork sausage (Italian or breakfast style)
- 1 tbsp olive oil (if needed)
- 1 small onion, finely chopped
- 3 cloves garlic, minced
- 8 oz mushrooms, sliced
- 2 cups chicken broth
- ¾ cup heavy cream
- 4 oz cream cheese, cubed
- ½ tsp salt
- ½ tsp black pepper
- ½ tsp dried thyme
Instructions
- Heat a large pot over medium heat. Add sausage and cook until browned, breaking it up as it cooks. Remove excess grease if needed.
- Add olive oil if the pan is dry, then add onion and cook for 3–4 minutes until soft.
- Add garlic and cook for 30 seconds until fragrant.
- Add sliced mushrooms and cook for 6–8 minutes until softened and lightly browned.
- Pour in chicken broth and bring to a gentle simmer.
- Add cream cheese and stir until fully melted and smooth.
- Stir in heavy cream, salt, black pepper, and thyme.
- Simmer uncovered for 5–8 minutes until thick and creamy.
- Taste and adjust seasoning before serving.
FAQ
- Are mushrooms keto-friendly?
Yes, mushrooms are low in net carbs and commonly used in keto soups. - Can I use chicken sausage?
Yes, but the soup will be leaner and slightly less rich. - Does this soup freeze well?
Yes, reheat gently to maintain the creamy texture. - Can I make it dairy-free?
No, the cream base is essential for this recipe.
Variations & Substitutions
- Use spicy sausage for heat
- Add spinach at the end
- Swap thyme for sage
- Use beef sausage for deeper flavor
Serving Suggestions
- Serve with keto bread
- Pair with a simple green salad
- Top with extra black pepper

Keto Creamy Sausage & Mushroom Soup
Ingredients
- 1 lb pork sausage (Italian or breakfast style)
- 1 tbsp olive oil (if needed)
- 1 small onion (finely chopped)
- 3 cloves garlic (minced)
- 8 oz mushrooms (sliced)
- 2 cups chicken broth
- ¾ cup heavy cream
- 4 oz cream cheese (cubed)
- ½ tsp salt
- ½ tsp black pepper
- ½ tsp dried thyme
Instructions
- Heat a large pot over medium heat. Add sausage and cook until browned, breaking it up as it cooks. Remove excess grease if needed.
- Add olive oil if the pan is dry, then add onion and cook for 3–4 minutes until soft.
- Add garlic and cook for 30 seconds until fragrant.
- Add sliced mushrooms and cook for 6–8 minutes until softened and lightly browned.
- Pour in chicken broth and bring to a gentle simmer.
- Add cream cheese and stir until fully melted and smooth.
- Stir in heavy cream, salt, black pepper, and thyme.
- Simmer uncovered for 5–8 minutes until thick and creamy.
- Taste and adjust seasoning before serving.
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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