Slow Cooker Creamy Mushroom Soup

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If you’re craving something warm, rich, and soul-soothing, look no further than this Slow Cooker Creamy Mushroom Soup. It’s a dreamy, velvety blend of earthy mushrooms, garlic, and herbs, slowly simmered to perfection. Whether you’re cuddling up on a chilly evening or need a cozy meal prep option, this soup hits the spot.

Unlike traditional cream-based soups that require constant stovetop attention, this slow cooker version lets the flavors deepen over time without the fuss. Each spoonful delivers pure comfort, perfect for pairing with crusty bread or a fresh green salad.

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Why You’ll Love This Slow Cooker Creamy Mushroom Soup

This soup is incredibly easy to make, thanks to the slow cooker doing most of the work. It’s also versatile—great as a main dish, side, or appetizer. Plus, it’s naturally vegetarian, but can easily be adapted for dairy-free diets too.

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What Kind of Mushrooms Should I Use?

A blend of cremini and white button mushrooms works beautifully for depth and balance. If you’re looking for a more intense flavor, toss in some chopped portobello or a handful of dried porcini (just rehydrate first). Mixing mushroom types adds layers of umami richness.

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Ingredients for the Slow Cooker Creamy Mushroom Soup

Each ingredient in this soup has a purpose—together, they create a velvety, earthy, and savory experience.

• Mushrooms (1.5 pounds): The star of the show. Use a mix of cremini and white button for balance.
• Yellow Onion (1 medium, diced): Adds subtle sweetness and depth.
• Garlic (4 cloves, minced): Brings pungency and warmth.
• Butter (3 tablespoons): Sautés the aromatics and enriches the base.
• All-purpose flour (1/4 cup): Helps thicken the soup slightly.
• Vegetable broth (4 cups): Provides the liquid base and umami punch.
• Heavy cream (1 cup): Adds luscious creaminess and body.
• Thyme (1 teaspoon dried or 2 teaspoons fresh): Earthy, herbal notes that complement mushrooms.
• Salt (1 teaspoon): Enhances overall flavor.
• Black pepper (1/2 teaspoon): For mild spice and depth.
• Fresh parsley (for garnish): Brightens the bowl with color and freshness.

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How To Make the Slow Cooker Creamy Mushroom Soup

Step 1: Sauté the Aromatics

In a large skillet, melt the butter over medium heat. Add diced onion and sauté for about 5 minutes, until softened. Stir in garlic and cook for another minute until fragrant.

Step 2: Build the Base

Add the mushrooms to the skillet and cook for about 8 minutes, allowing them to release moisture and reduce in size. Stir in the flour and cook for 1-2 minutes, stirring constantly, until flour is no longer visible.

Step 3: Slow Cook It

Transfer the mushroom mixture into your slow cooker. Pour in the vegetable broth, add thyme, salt, and pepper. Stir well to combine. Cover and cook on LOW for 6-7 hours or HIGH for 3-4 hours.

Step 4: Blend for Creaminess

Once cooked, use an immersion blender to blend half the soup in the slow cooker. This gives a creamy texture while keeping some mushroom pieces intact for a rustic feel.

Step 5: Add the Cream

Stir in the heavy cream and let it heat through for 10-15 minutes on LOW. Taste and adjust seasoning if needed.

Step 6: Garnish and Serve

Ladle into bowls and garnish with fresh parsley. Serve with warm bread or croutons.

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How to Serve and Store Slow Cooker Creamy Mushroom Soup

This recipe yields 6 hearty servings, making it perfect for family dinners or meal prep.

To store, let the soup cool completely. Refrigerate in an airtight container for up to 4 days. To freeze, place in a freezer-safe container without the cream and add it after reheating.

Reheat gently on the stovetop or microwave, stirring occasionally.

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What to Serve With Slow Cooker Creamy Mushroom Soup?

Crusty Garlic Bread

To soak up the creamy goodness.

Grilled Cheese Sandwich

Make it gourmet with sharp cheddar or Swiss.

Side Salad

Something fresh like arugula or spinach with vinaigrette complements the richness.

Roasted Vegetables

Add some caramelized carrots or Brussels sprouts on the side.

Crackers or Breadsticks

Perfect for dipping and extra crunch.

Savory Scones

Try herb scones or cheese scones for a cozy pairing.

Baked Potatoes

Top with sour cream and chives for a filling side.

Mushroom Crostini

Double down on mushrooms with a toasty topping.

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Frequently Asked Questions

1. Can I make this soup dairy-free?
Yes! Replace butter with olive oil and heavy cream with coconut milk or unsweetened cashew cream.

2. Can I use chicken broth instead of vegetable?
Absolutely. It will no longer be vegetarian, but chicken broth adds great flavor.

3. Can I freeze this soup?
Yes, but it’s best to freeze it before adding the cream. Add cream after reheating to prevent separation.

4. How do I thicken the soup more?
Add an extra tablespoon of flour when sautéing or simmer the soup uncovered for 10 minutes before blending.

5. What mushrooms are best for flavor?
Cremini, portobello, and shiitake add rich depth. Feel free to mix for variety.

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📌 Save this recipe to your Pinterest dinner board so you can come back to it any time.
And let me know in the comments how yours turned out. Did you blend it all or leave some chunky bits? Add extra herbs?

I love hearing how others make these recipes their own. Questions are welcome too—let’s help each other cook smarter.

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Conclusion

This Slow Cooker Creamy Mushroom Soup is everything you want in a comforting, homemade dish: flavorful, creamy, and deeply satisfying. Whether served solo or as part of a larger meal, it’s sure to become a repeat favorite.

Hungry for more cozy bowls and creative dinner ideas? Don’t miss our comforting Vegan Breakfast Quesadillas, vibrant Rainbow Smoothie Bowls, and light Snack Prep Veggie Sticks with Easy Pesto Hummus.

For even more inspiration, check out all the daily recipes I share on Meals We Share!

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