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Why This Recipe Works
- Dump-and-Start Convenience: Everything goes into the crock at once—no browning, no babysitting.
- Layered Flavor, Zero Effort: A handful of dried porcini mushrooms and a splash of sherry create slow-cooked depth while you binge Netflix.
- Protein & Veg in One Pot: Juicy chicken thighs, carrots, celery, and two types of mushrooms deliver a complete meal.
- Silky Without Cream: A quick cornstarch slurry thickens the broth so you don’t need heavy cream—lighter comfort food.
- Freezer-Friendly: Make a double batch; it reheats like a dream.
- Kid-Approved, Adult-Celebrated: Mild enough for picky eaters, but add a crack of black pepper and fresh thyme and you’ve got date-night elegance.
Ingredients You'll Need
Great soup starts at the grocery store, but that doesn’t mean you have to break the bank. Below is a quick field guide to each star ingredient—and the swaps that work in a pinch.
Chicken Thighs: I specify boneless, skinless thighs because they stay succulent after hours of gentle simmering. If you only have breasts, go ahead and use them, but pull the slow cooker back to the LOW setting after 3 hours so they don’t dry out. Dark meat is forgiving; white meat is not.
Cremini & Baby Bella: These are actually the same mushroom harvested at different ages; either delivers an earthy base note. Wipe, don’t rinse, to avoid water-logged fungi. If cremini prices spike, substitute plain white button mushrooms and add an extra teaspoon of soy sauce for umami.
Dried Porcini: A tiny half-ounce transforms tap water into liquid gold. Steep them in hot broth for five minutes, then mince and add both mushrooms and soaking liquid to the crock. No porcini? Use dried shiitake or a teaspoon of mushroom powder.
Vegetable Trinity: Carrots, celery, and onion are classic aromatics. Dice small so they soften evenly—⅛-inch pieces disappear into the broth, coaxing kids to eat veg by stealth.
Herbs: Fresh thyme sprigs give a lemony, piney lift. Dried thyme works—use ½ teaspoon—but add it at the beginning so the volatile oils rehydrate. Rosemary is too dominant here; avoid it.
Sherry: A gentle background sweetness. Buy an inexpensive dry bottle labeled “for cooking.” If you keep white wine on hand, swap 1:1. Skip cooking wine with salt; your soup will be briny enough from the broth.
Chicken Broth: Reach for low-sodium so you control seasoning. I like the boxed organic brands, but homemade stock is the jackpot. Vegetable broth works for a pescatarian twist—add a strip of kombu for depth.
Cornstarch Slurry: My secret to glossy body without heavy cream. Arrowroot or potato starch are 1:1 substitutes. If you’re gluten-free, double-check that your cornstarch is certified.
How to Make Easy Slow Cooker Chicken and Mushroom Soup
Prep the dried mushrooms
Bring 1 cup of your broth to a gentle simmer in a small saucepan. Remove from heat, add dried porcini, cover, and let stand 5 minutes. Strain through a fine-mesh sieve, reserving liquid. Finely chop the now-plumped porcini; this concentrates their flavor and prevents chewy surprises in the final bowl.
Load the slow cooker
Scatter onion, carrots, and celery across the bottom. Add fresh mushrooms, chopped porcini, and thyme sprigs. Nestle chicken thighs on top in a single layer; sprinkle with 1 teaspoon salt, ½ teaspoon pepper, and the flour. The flour will help thicken the broth as the soup cooks.
Add liquids
Pour reserved porcini soaking liquid plus remaining broth over everything. Drizzle in soy sauce and sherry. Resist stirring—keeping the thighs on top prevents them from toughening against the direct heat of the insert.
Set it and forget it
Cover and cook on LOW 6–7 hours or HIGH 3–4 hours, until vegetables are tender and chicken shreds easily with a fork. If you’re away all day, use the LOW setting; the soup will stay perfect on WARM for up to 2 additional hours.
Shred the chicken
Using tongs, transfer thighs to a plate. They’ll be so tender that two forks feel like overkill—just pull them apart into bite-size strips. Discard thyme stems and return chicken to the pot.
Thicken and finish
In a small jar shake cornstarch with 3 tablespoons cold water until smooth. Stir slurry into the hot soup, cover, and cook on HIGH 15 minutes more, until broth turns glossy and lightly coats the back of a spoon. Taste and adjust salt; discard bay leaf.
Serve
Ladle into warm bowls, shower with chopped parsley, and crack fresh black pepper on top. Offer crusty baguette slices for swiping the bowl clean.
Expert Tips
Overnight Soak for Steel-Cut Oats Feel
Want to wake up to breakfast-ready leftovers? Let the soup cool completely, refrigerate overnight, and reheat gently; the flavors marry and the broth thickens even more.
Temperature Shock Prevention
Never place a hot ceramic insert directly on a cold granite counter; thermal shock can crack it. Set it on a wooden cutting board or folded towel.
Slurry Safety
Always mix cornstarch with cold water before adding to hot liquid; this prevents gluey lumps. If your tap water is warm, use chilled broth instead.
Fitness-Friendly Boost
Stir in 2 cups of fresh baby spinach during the last 5 minutes for extra iron and a pop of color that won’t wilt to mush.
Variations to Try
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1
Creamy Version: Replace cornstarch slurry with ½ cup heavy cream and simmer 5 minutes. Add a pinch of nutmeg for bakery-style richness.
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2
Wild Rice Upgrade: Stir in 1 cup cooked wild rice at the end for nutty chew. It turns the soup into a Minnesota-style hotdish without the canned soup.
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3
Smoky Paprika: Swap ½ teaspoon of the black pepper for smoked paprika and add a diced fire-roasted red pepper for Spanish flair.
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4
Vegetarian: Omit chicken, use vegetable broth, and add two 15-oz cans of drained chickpeas plus 8 oz cubed tofu for protein.
Storage Tips
Refrigerate: Cool soup completely, transfer to airtight containers, and refrigerate up to 4 days. The broth will thicken; thin with a splash of broth or water when reheating.
Freeze: Portion into freezer-safe quart bags, press out excess air, and freeze flat on a sheet pan. Once solid, stack vertically like books. Use within 3 months for best flavor.
Reheat: Thaw overnight in the fridge. Warm gently over medium-low heat, stirring occasionally. Microwave works in a pinch—use 50 % power to prevent the cornstarch from breaking.
Frequently Asked Questions
Easy Slow Cooker Chicken and Mushroom Soup
Ingredients
Instructions
- Prep Porcini: Warm 1 cup broth, soak dried porcini 5 min; chop and reserve liquid.
- Load Veg: Layer onion, carrots, celery, fresh mushrooms, porcini, thyme into slow cooker.
- Add Chicken: Top with thighs, salt, pepper, flour.
- Pour Liquids: Add remaining broth, reserved porcini liquid, sherry, soy sauce.
- Cook: Cover; LOW 6–7 hr or HIGH 3–4 hr.
- Shred: Remove chicken, shred, return to pot.
- Thicken: Whisk cornstarch with 3 Tbsp cold water; stir in, cook HIGH 15 min.
- Serve: Season, garnish with parsley, crack fresh pepper.
Recipe Notes
For a creamier texture, swap cornstarch slurry for ½ cup heavy cream. Soup thickens as it stands; thin with broth when reheating.
