Why You’ll Love this Velvety Blue Cheese Mushroom Soup
If you’re a mushroom lover who also adores the tangy kick of blue cheese, this velvety soup is about to become your new comfort food obsession. I’m slightly obsessed with how the earthy chestnut mushrooms blend with the creamy, pungent blue cheese in this recipe.
What makes it truly special? The slow cooking process. Seven hours might seem like forever when you’re hungry, but trust me, it develops flavors you simply can’t rush. The leeks add a gentle sweetness, while those potatoes create the most luxurious texture without heavy cream overload. Perfect for chilly evenings, fancy dinner parties, or just Tuesday.
What Ingredients are in Velvety Blue Cheese Mushroom Soup?
To create this luxurious Blue Cheese Mushroom Soup, you’ll need a carefully selected blend of earthy, savory ingredients that work together to create something truly special. The combination of leeks and chestnut mushrooms forms the backbone of this soup, while the blue cheese adds that distinctive tangy punch that elevates it from everyday to extraordinary.
And don’t worry about the slow cooking time—it’s mostly hands-off while your slow cooker does all the work.
- 3 leeks, finely sliced and rinsed
- 1 tablespoon olive oil
- 4 potatoes, peeled and sliced
- 500g chestnut mushrooms, cleaned and sliced
- 2 garlic cloves
- 1 teaspoon dried thyme
- 3 cups chicken stock
- Salt and pepper to taste
- 1/2 cup double cream
- 90g blue cheese, grated
When shopping for this recipe, the quality of your mushrooms and blue cheese really matters. Try to find fresh chestnut mushrooms with firm caps and no sliminess.
For the blue cheese, you have options—Stilton works beautifully for a stronger flavor, while Gorgonzola provides a milder alternative.
And if you’re vegetarian, simply swap the chicken stock for vegetable stock. The soup will still develop that wonderful depth of flavor during the slow cooking process.
How to Make this Velvety Blue Cheese Mushroom Soup

Creating this luxurious soup is surprisingly straightforward, though patience is definitely your friend here. Start by heating 1 tablespoon of olive oil in a large pan over medium heat. Add your 3 finely sliced and thoroughly rinsed leeks (and trust me, that rinsing step matters—no one wants gritty soup), and let them gently soften for about 5 minutes. This gentle cooking releases their sweet flavor without any browning.
Then add 2 minced garlic cloves, 1 teaspoon of dried thyme, and a generous pinch of salt and pepper, continuing to cook everything together for another 5 minutes until fragrant.
While your aromatics are softening, parboil 4 peeled and sliced potatoes for about 7 minutes—they don’t need to be fully cooked, just given a head start.
Now comes the easy part: transfer your sautéed leek mixture, the parboiled potatoes, and 500g of cleaned and sliced chestnut mushrooms into your slow cooker. Pour in 3 cups of chicken stock, cover, and let it cook on low for approximately 7 hours. The house will smell incredible as all those earthy flavors meld together. During this long, slow simmer, the mushrooms release their complex flavors and the potatoes break down to help thicken the soup naturally.
For the finishing touch that transforms this from a good soup to an extraordinary one, stir in 1/2 cup of double cream and 90g of grated blue cheese about 15 minutes before the end of cooking time, turning the slow cooker to high for this final stage.
The cream adds silkiness while the blue cheese melts into the soup, creating pockets of tangy richness throughout. Finally, carefully transfer the hot soup to a blender and blitz until smooth and velvety. You might need to do this in batches depending on your blender size.
Give it a final taste and adjust the seasoning if needed—sometimes a bit more salt really helps the blue cheese flavor shine through. And there you have it: a restaurant-worthy soup that’s perfect for impressing guests or simply treating yourself on a chilly evening.
Velvety Blue Cheese Mushroom Soup Substitutions and Variations
Many wonderful variations of this velvety blue cheese mushroom soup can transform it based on your pantry ingredients or dietary needs.
Don’t have chestnut mushrooms? I often swap in cremini or even a mix of wild mushrooms for a more woodsy flavor.
Leeks can be replaced with onions in a pinch.
For a lighter version, try half-and-half instead of double cream. Not a blue cheese fan? Gruyère or sharp cheddar work beautifully too.
Vegetarians can use vegetable stock rather than chicken.
Sometimes I add a splash of white wine before the stock goes in. Trust me, it adds that certain something that makes everyone ask for seconds.
What to Serve with Velvety Blue Cheese Mushroom Soup
This velvety blue cheese mushroom soup deserves perfect companions to round out your meal.
I love serving it with crusty sourdough bread for dipping—those crispy edges soaking up the creamy goodness? Heaven.
A simple green salad with tart vinaigrette balances the richness, cutting through the decadent flavors with welcome brightness.
For wine pairings, try a crisp Chardonnay or dry Riesling.
When I’m feeling fancy, I’ll add a garnish of crispy pancetta bits and fresh thyme leaves.
And for a complete dinner? Serve smaller portions as a starter before a roasted chicken or vegetarian risotto.
Trust me, your guests will be impressed.
Final Thoughts
After mastering this blue cheese mushroom soup, I’ve found it quickly becomes a staple in your cooking repertoire.
The way those earthy mushrooms and tangy blue cheese come together creates something truly special—comfort food with a gourmet twist.
I love how adaptable this recipe is, too. Having guests who aren’t blue cheese fans? Simply swap it for a milder cheese.
Need it vegetarian? Use vegetable stock instead of chicken.
What I appreciate most is how this soup transforms humble ingredients into something that feels restaurant-worthy.
Seriously, who wouldn’t want to curl up with a steaming bowl on a chilly evening?