This is one of those recipes that feels a bit special, but is actually very simple to make. With a few quick steps at the start, the slow cooker does the rest, giving you a creamy, comforting risotto without needing to stand at the stove.
Building flavour before the slow cooker
This is the step that really makes the difference. A slow cooker won’t create flavour on its own, so what you do in the pan first matters.
Cook the mushrooms until they release their moisture and start to turn golden. Don’t rush this part, it’s where the flavour comes from. Then add the onion and garlic and let them soften for a few minutes. This builds a good base for the risotto.
I also like to cook the rice briefly in the butter before adding liquid. It coats the grains and helps them cook evenly later, rather than turning soft on the outside too quickly.
If you use wine, let it reduce properly. That sharpness cooks off, leaving behind a gentle acidity that balances the richness of the finished risotto.
Choosing mushrooms and getting the best texture
Using both dried and fresh mushrooms gives the best flavour and texture. The dried mushrooms bring a deep, almost savoury intensity, while the fresh mushrooms give you texture.
The soaking liquid is just as important. Once strained, it becomes a rich mushroom stock that adds another layer of flavour to the risotto.
For the fresh mushrooms, let them cook long enough to lose their liquid. If they go into the slow cooker too wet, the final dish can feel loose rather than creamy.
I prefer slicing some mushrooms and chopping others a little finer. That way you get both a soft base and some texture throughout.
Getting the rice just right in a slow cooker
Arborio rice is essential here. It releases starch as it cooks, which is what gives risotto its creamy consistency without needing lots of cream. If you’ve made stovetop risotto before, the texture here should still feel creamy and slightly loose rather than thick or dry.
The liquid ratio is a little different from stovetop risotto. Everything goes in at once, so the slow cooker does the work of absorbing the liquid rather than adding it bit by bit.
Give it one stir about halfway through to keep everything combined. That’s usually enough without affecting how the rice cooks.
Timing, temperature and avoiding mushy risotto
This recipe works best on HIGH. It keeps the cooking time shorter and helps the rice hold its shape better.
Start checking at around the 1 hour mark. The rice should be tender but still have a slight bite in the centre. If you leave it too long, it can tip over into soft and heavy quite quickly.
If it does go a little too far, you can loosen it with hot broth and it will still be very good, just a little softer than intended.
Finishing touches that make it feel like real risotto
Stirring in butter and parmesan at the end gives you that classic silky texture. It’s worth taking the extra minute here, it really improves the texture.
If the risotto feels too thick, add a little hot broth until it loosens to a creamy consistency. It should gently spread on the plate, not sit stiffly.
A small squeeze of lemon at the end lifts everything. It won’t taste lemony, just fresher and more balanced.
Serve it straight away while it’s warm and creamy, with a little extra parmesan and fresh herbs on top.
How to Make Slow Cooker Mushroom Risotto
Step 1. Soak dried mushrooms and reserve the liquid
Step 2. Sauté fresh mushrooms until golden, then cook onion and garlic
Step 3. Add arborio rice and cook briefly to coat
Step 4. Add the wine to deglaze the pan and let it reduce to cook off alcohol.
Step 5. Transfer to slow cooker with stock and mushroom liquid
Step 6. Cook until the rice is tender, then stir through the butter, parmesan and seasoning.
Step 7. Serve in bowls with wedges of lemon, extra parmesan and fresh parsley
A few helpful notes before you start
Can you make risotto in a slow cooker without stirring?
Yes, you only need one stir halfway through. It won’t be exactly the same as stovetop risotto, but it still turns out creamy and really good.
Why is my risotto too thick or too thin?
Too thick: stir in a little hot broth at the end.
Too thin: let it sit uncovered for a few minutes and it will thicken up.
Can I skip the wine?
Yes. You can replace it with extra broth or a small splash of lemon juice at the end for balance.
Can you reheat mushroom risotto?
Yes, reheat gently and add a little broth to bring back the creamy texture.
More easy slow cooker dinners
- Slow Cooker Red Lentil Curry
- Slow Cooker Lentil & Vegetable Cottage Pie
- Slow Cooker Pumpkin & Chickpea Curry
- Slow Cooker Zuppa Toscana
- Slow Cooker Spinach & Ricotta Lasagna
If you try this recipe, I’d love to hear how it turned out for you. Feel free to leave a rating below.
Slow Cooker Mushroom Risotto
A creamy, flavour-packed mushroom risotto made in the slow cooker with minimal stirring and simple, reliable steps.
Ingredients
- 1 ounce dried mixed mushrooms , 25 grams
- 1 1/2 cups boiling water , 360 ml
- 1 tablespoon butter or olive oil
- 10 ounces fresh mushrooms, cremini/brown , 300 grams
- 1 teaspoon butter
- 1 small onion , finely diced (or 2 shallots)
- 3 cloves garlic , crushed
- 1 teaspoon butter
- 1 1/2 cups arborio rice , 300 grams
- 1/2 cup dry white wine , 120 ml
- 1 1/2 cups hot vegetable broth , 360 ml
- 1/2 teaspoon soy sauce
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 2 sprigs fresh thyme , (or 1/2 teaspoon dried thyme)
To Finish
- 1/4 - 1/2 cup hot vegetable broth
- 1/2 cup parmesan , 45 grams, finely grated
- 1 tablespoon butter
- 2 tablespoons fresh parsley , chopped
- squeeze lemon juice
- freshly cracked black pepper
Instructions
- Place the dried mushrooms in a heatproof bowl. Pour over the boiling water and soak for 20 minutes until softened. Remove, squeeze out excess moisture, then finely chop. Strain the soaking liquid through a fine sieve and set aside.
- Heat the butter or oil in a large frying pan over medium-high heat. Add the fresh mushrooms and cook, stirring occasionally, until their liquid evaporates and they turn golden, about 6–8 minutes.
- Add a small knob of butter and the onion. Cook for 3–4 minutes until softened. Stir in the garlic and chopped soaked mushrooms and cook for 1 minute until fragrant. Add the remaining butter and stir to combine.
- Add the arborio rice and cook for 1–2 minutes, stirring well to coat the grains.
- Pour in the white wine and cook until mostly evaporated, about 2 minutes.
- Transfer the mixture to a 4–5 quart slow cooker.
- Combine the reserved mushroom liquid with the vegetable broth and heat until hot (not boiling).
- Pour into the slow cooker with the soy sauce, salt, pepper and thyme.
- Cover and cook on HIGH for 1 to 1½ hours, stirring once halfway through, until the rice is tender with a slight bite in the centre. Begin checking at 1 hour to avoid overcooking.
- Stir in ¼ cup hot broth, parmesan and butter. Leave the lid off for 5 minutes to thicken slightly.
- Taste and adjust seasoning. Add a little extra hot broth if needed for a creamy consistency.
- Serve immediately in bowls with parsley, a squeeze of lemon juice and cracked black pepper.
- Store leftovers in an airtight container in the fridge for up to 3 days, or freeze for up to 2–3 months.
- Reheat gently on the stovetop or in the microwave, stirring in a little hot broth to loosen and restore the creamy texture.
Notes
- Reheated risotto will thicken — add extra broth to bring it back to a creamy consistency.
- Leftovers are perfect for arancini, risotto cakes or baked risotto.
Nutrition Information:
Yield: 4 Serving Size: 1Amount Per Serving: Calories: 250Total Fat: 13gSaturated Fat: 6gUnsaturated Fat: 7gCholesterol: 23mgSodium: 719mgCarbohydrates: 27gFiber: 1gSugar: 3gProtein: 4g
This nutrition calculation for Just Slow Cooker Recipes has been automated, please use your discretion with the calculation and use your own if unsure.
Once you’ve made this once, it becomes really easy. The main thing to watch is the timing.
Thank you so much for visiting and taking the time to try this recipe. I hope you find plenty of slow cooker inspiration here on my blog.
If you’d like to see more of my latest recipes and kitchen adventures, be sure to follow along on Pinterest.
Happy cooking!
Anna
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