Creamy Mushroom Soup with Potato
A creamy soup of browned mushrooms, potato, garlic and herbs with a smooth, hearty broth.
This creamy mushroom soup uses browned mushrooms, onion, garlic and potato for a hearty texture. A little flour thickens the broth before cream is added, while blending part of the soup keeps some mushroom pieces intact. The source lists two separate fats and a full cup of cream; this version consolidates the butter and oil amounts and adds the cream off the boil to reduce splitting. Adjust thickness with broth after blending. Heat butter and oil in a heavy pot. Add mushrooms in batches and cook until browned and their released liquid evaporates. Add onion and cook 5 minutes. Stir in garlic for 30 seconds, then sprinkle flour over the vegetables and stir 1 minute.

Recipe card
Creamy Mushroom Soup with Potato
Equipment: Knife, cutting board, measuring tools and a suitable pan or pot
Ingredients
Instructions
Brown mushrooms
Heat butter and oil in a heavy pot. Add mushrooms in batches and cook until browned and their released liquid evaporates.
Cook aromatics
Add onion and cook 5 minutes. Stir in garlic for 30 seconds, then sprinkle flour over the vegetables and stir 1 minute.
Simmer soup
Gradually whisk in broth. Add potatoes, salt and pepper; simmer 15 to 18 minutes until potatoes are tender.
Blend
Blend all or part of the soup until the texture is as smooth as you like. Return to low heat.
Finish
Stir in cream and warm gently without boiling. Taste, adjust seasoning and top with parsley.
How to tell when it is ready
Stir in cream and warm gently without boiling. Taste, adjust seasoning and top with parsley.
Tips
- Heat butter and oil in a heavy pot.
- Add onion and cook 5 minutes.
- Gradually whisk in broth.
- Blend all or part of the soup until the texture is as smooth as you like.
Troubleshooting
- If soup is too thick, add broth a little at a time.
- If flour clumps, whisk broth in gradually.
Substitutions
- Use vegetable stock for a vegetarian soup.
- Use half-and-half for a lighter but thinner soup.
Variations
- Add thyme with the mushrooms.
- Stir in a handful of spinach at the end.
Serving suggestions
- Top with chopped parsley or chives.
- Serve with toasted bread.
- Add black pepper just before serving.
- Pair with a green salad.
Make ahead
Prepare and measure the ingredients in advance. Refrigerate in a covered container up to 3 days. Reheat gently over low heat; avoid a hard boil after adding cream.
Storage
Refrigerate in a covered container up to 3 days. Reheat gently over low heat; avoid a hard boil after adding cream.
Food safety
Cool promptly and refrigerate within 2 hours. Reheat leftovers until steaming hot.
Frequently asked questions
How do I prevent cream from splitting in mushroom soup?
Lower the heat before stirring in cream and warm the soup gently without letting it boil hard.
How should I store creamy mushroom soup with potato?
Refrigerate in a covered container up to 3 days. Reheat gently over low heat; avoid a hard boil after adding cream.
Top with chopped parsley or chives. Refrigerate in a covered container up to 3 days. Reheat gently over low heat; avoid a hard boil after adding cream.
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