Transform your meal with delectable Instant Pot mushrooms and onions, ready in a mere 10 minutes! This incredibly easy and flavorful vegetable side dish is a family favorite, consistently achieving perfect tenderness and rich, savory notes. Sautéed to perfection with butter and garlic, then expertly steamed under pressure, these mushrooms are a game-changer for weeknight dinners and special occasions alike. Whether served alongside roasted chicken or a juicy steak, this recipe guarantees a mouthwatering addition to your plate.
We recently whipped up a batch of these amazing Instant Pot mushrooms and onions to accompany our chicken dinner, and the results were simply extraordinary! The rich, earthy flavors combined with the buttery tenderness left us thoroughly impressed. It’s a testament to how simple yet impactful pressure cooking can be, making this one of our top easy Instant Pot recipes that we’re excited to share with you.
Mastering Mushrooms in Your Ninja Foodi or Pressure Cooker
Even if you’ve never been a dedicated fan of mushrooms, this preparation method might just convert you! The magic of pressure cooking ensures that every mushroom is infused with flavor and cooked to an ideal, tender texture. This versatile recipe isn’t limited to just the Instant Pot; it works beautifully in other popular multi-cookers like the Ninja Foodi (using its pressure cooking lid) or a Crockpot Express. The key is achieving that perfect balance of buttery, savory, and tender goodness in every bite.
For the best results, we highly recommend using baby bella mushrooms (also known as cremini). Their slightly firmer texture and deeper, earthier flavor truly shine when cooked under pressure. While white button mushrooms can be used, baby bellas maintain their integrity better, offering a more satisfying bite. Feel free to experiment and discover your personal preference!
If you’re new to the world of pressure cooking, welcome! We have an abundance of simple, one-pot meal recipes designed to make your culinary journey enjoyable. To help you get started on the right foot, here are a few foundational tips:
- Make sure to bookmark our dedicated Instant Pot recipes page. We’re constantly adding new and exciting dishes each week!
- Download and print this essential resource: our Instant Pot cooking times cheat sheet. It’s an invaluable guide that will help you understand the optimal cooking durations for various ingredients like meats, vegetables, and beans in your pressure cooker.
- For consistent results and easier cleanup, I enthusiastically recommend investing in a non-stick inner pot for your Instant Pot.
- While it’s beneficial to understand how to deglaze a pressure cooker after sautéing, a non-stick liner significantly minimizes any potential issues with food sticking.
For context, the Instant Pot model I rely on for all my recipe creations is a 6-quart version, a perfect size for most household meals.
This mushroom and onion side dish was born out of one of those serendipitous kitchen moments – a combination of “this would be delicious,” “I have those ingredients,” and “let’s give this a try.” Not all experiments yield instant success, but this one absolutely did. It quickly secured its spot as one of our absolute favorite Instant Pot vegetable recipes to date.
Key Ingredients for Perfectly Cooked Mushrooms
Achieving the best texture and flavor in this recipe hinges on selecting the right ingredients. Let’s explore each component:
For your mushrooms, you will undoubtedly achieve superior results using Baby Bella mushrooms. Their dense, earthy texture holds up exceptionally well under pressure, providing a much more satisfying bite compared to the softer white button varieties. These robust mushrooms are also fantastic in casseroles, like our popular Instant Pot Cream of Mushroom Rice dish. If you happen to have any leftover, they’re perfect for that recipe too!
The addition of finely diced yellow onions is crucial. When sautéed, they caramelize beautifully, releasing a subtle sweetness that perfectly complements the savory mushrooms. The combination of mushrooms and onions is a classic culinary duo for a reason – their flavors enhance each other wonderfully.
To sauté and enrich the dish, I prefer using salted Kerrygold butter. Its rich, creamy flavor is unmatched and truly elevates the taste of the mushrooms. While olive oil can be a substitute for sautéing, butter undeniably provides a superior depth of flavor. If you opt for a dairy-free alternative, remember that these are often unsalted, so you might need to add an extra pinch of salt to balance the seasoning.
A good quality broth is essential for the liquid component. Whether you choose vegetable or chicken broth, ensure it’s low-sodium if you’re sensitive to salt, as you’ll be adding other seasonings. For an aromatic kick and depth of flavor, I incorporate a generous tablespoon of minced garlic, along with a dash of garlic salt to further enhance that savory profile.
As you can see, baby bellas have a beautiful, deep brown color and are typically priced similarly to the more common white button mushrooms. I frequently use them in a variety of dishes, including our air fryer stuffed mushrooms and other air fryer vegetable recipes, because they hold their shape exceptionally well during cooking, preventing them from becoming overly soft or crumbly.
Cooking Whole or Sliced Portobello Mushrooms in the Instant Pot
To ensure our mushrooms retain a pleasant, slightly firm texture, I prefer to keep them whole or at most, halve them, especially if they are larger varieties like baby bellas or even smaller portobello caps. The larger the pieces, the more they can absorb the incredible flavors from the butter, garlic, and broth without becoming mushy. A crucial tip for seasoning is to start with a lighter hand. It’s always easier to add more salt and pepper once the dish is cooked and you’ve had a chance to taste it, rather than trying to salvage an over-seasoned dish. Truly, embracing pressure cooking has revolutionized my kitchen experience!
White Button vs. Baby Bella Mushrooms: Which is Better for Pressure Cooking?
While you can generally substitute white button mushrooms for baby bellas in many recipes, for pressure cooking, the choice truly matters. Baby bellas, with their slightly denser structure and richer flavor, will hold up significantly better under high pressure. They are less likely to become overly soft or mushy, maintaining a more desirable texture. This is precisely why I advocate for using the deeper brown baby bella variety. If you opt to use white button mushrooms, which are inherently softer, I recommend reducing the pressure cooking time by approximately half to prevent them from turning too tender.
Optimal Cooking Time for Mushrooms in the Instant Pot
When using an Instant Pot, mushrooms cook remarkably fast under high pressure. The actual cooking time is just 5 minutes! However, it’s important to factor in the time your pressure cooker takes to come to pressure, which can add an additional 5-10 minutes depending on the model and the volume of ingredients. This method is significantly faster than traditional stovetop cooking with a lid, which would require constant monitoring, or even oven roasting, which might take a comparable amount of time but with less flavor infusion. The efficiency and hands-off nature of the Instant Pot make it the superior choice.
Step-by-Step Guide: Pressure Cooking Mushrooms to Perfection
Time needed: 9 minutes (plus pressure build-up time)
Achieve perfectly tender and flavorful pressure cooker mushrooms with this simple method.
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Sauté Aromatics
Begin by setting your Instant Pot to the “Sauté” function. Add butter, minced garlic, and diced onions. Allow the butter to melt completely and sauté the onions until they soften and become translucent, releasing their sweet aroma. This step is crucial for building a rich flavor base.
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Prepare Mushrooms
While the aromatics are sautéing, gently clean your mushrooms. You can either use a damp paper towel to wipe off any dirt or briefly rinse them under a slow stream of cold water to remove debris. Immediately place them on a few paper towels and gently roll them to absorb excess moisture. This prevents them from becoming waterlogged.
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Combine and Sauté Mushrooms
Add the cleaned mushrooms into the pot with the softened onions and garlic. Sauté for another 3-4 minutes, stirring gently but often, just until the mushrooms begin to soften slightly and release some of their moisture. This initial sautéing step develops a deeper flavor. Once done, turn off the Instant Pot’s sauté function.
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Pressure Cook
Pour in the broth. Secure the lid on your Instant Pot, ensuring the sealing valve is set to the “Sealing” position. Select “Manual” or “Pressure Cook” (High Pressure) and set the timer for 5 minutes. Once cooking is complete, perform a quick release of pressure by carefully moving the sealing valve to “Venting.”
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Serve Immediately
Carefully open the lid. Use a slotted spoon to lift out the perfectly sautéed and pressure-cooked mushrooms, allowing any excess liquid to drain back into the pot. You can leave any remaining mushrooms in the delicious butter sauce until you’re ready to serve, ensuring they stay warm and flavorful.
When handling food in my Instant Pot, I always reach for wooden utensils. A slotted wooden spoon, in particular, is my go-to tool for nearly everything – from sautéing to serving, it’s incredibly versatile and gentle on the non-stick surface.
Cooking Canned Mushrooms in a Pressure Cooker: Is it Worth It?
Frankly, there’s little necessity to cook canned mushrooms under pressure, as they are already pre-cooked and quite soft. A quick 30-second microwave zap is usually sufficient to warm them through. However, if you’re determined to incorporate them into this recipe’s flavor profile, you can certainly do so. I would advise skipping the pressure cooking step entirely. Instead, simply drain your canned mushrooms thoroughly, then add them to the Instant Pot during the initial sauté phase with the onions, garlic, and butter. Allow them to gently warm through and absorb the flavors on the “Sauté” setting, without ever needing to seal the lid for pressure cooking.
The beauty of this method is that you end up with perfectly cooked, tender, and intensely flavorful sautéed mushrooms without the constant supervision required for stovetop cooking. Unlike boiled mushrooms, which can often lack depth, this Instant Pot technique infuses them with rich butter and garlic notes. It’s truly a hands-off approach: simply add your ingredients, set to high pressure for a few minutes, and finish with a quick release for exceptional results every time.
If you’re looking to double this recipe for a larger gathering, you won’t need to adjust the pressure cooking time; 5 minutes will still be ideal. Of course, if you prefer your mushrooms exceptionally soft, you could add an extra minute, but for us, five minutes yields a perfect texture – tender without being at all mushy.
Instant Pot Mushrooms and Onions Recipe
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Equipment
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1 pressure cooker
Ingredients
- 16 oz mushrooms, baby bellas are best
- 1/4 cup butter
- 1/2 small onion, diced
- 1 tbsp minced garlic
- 1/4 tsp garlic salt
- 3/4 cup broth
Instructions
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Set your Instant Pot to “Sauté” mode. Add the butter, minced garlic, and diced onions. Cook until the onions have softened and become translucent, stirring occasionally.
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Gently rinse your mushrooms under cool water or wipe clean with a damp paper towel, then pat them thoroughly dry. Add the prepared mushrooms to the pot. Gently stir and continue to sauté for 3-4 minutes, just until they begin to slightly soften. Turn off the Instant Pot’s sauté function.
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Pour in the broth. Secure the lid on your Instant Pot, ensuring the steam release valve is set to the “Sealing” position.
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Select “Pressure Cook” (or “Manual”) on High Pressure and set the timer for 5 minutes. Once cooking is complete, perform a quick release of pressure.
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Carefully remove the lid. Use a slotted spoon to serve the mushrooms, allowing any extra liquid to remain in the pot. Garnish with a sprinkle of Parmesan cheese, and season with additional salt and pepper to taste, if desired.
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Nutrition
Calories: 90kcal,
Carbohydrates: 4g,
Protein: 3g,
Fat: 8g,
Saturated Fat: 5g,
Cholesterol: 20mg,
Sodium: 286mg,
Potassium: 254mg,
Fiber: 1g,
Sugar: 2g,
Vitamin A: 299IU,
Vitamin C: 2mg,
Calcium: 7mg,
Iron: 1mg
Nutrition information is automatically calculated, so should only be used as an approximation.
Additional Info
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Frequently Asked Questions About Instant Pot Mushrooms
White, or button, mushrooms are the youngest and mildest variety, characterized by their light color and softer texture, especially when cooked. Baby bella mushrooms, also known as cremini, are the same species but harvested at a slightly more mature stage. This gives them a darker brown color, a firmer texture, and a deeper, earthier flavor, making them more robust for cooking methods like pressure cooking.
The best way to clean mushrooms is a subject of some debate among chefs. The key is to be gentle to avoid waterlogging them. You can either use a slightly damp paper towel to delicately wipe away any visible dirt or debris. Alternatively, if they are particularly dirty, you can quickly rinse them under a very slow stream of cold water and then immediately pat them thoroughly dry with paper towels. Avoid soaking mushrooms, as they absorb water easily, which can dilute their flavor and affect their texture.
Most mushroom varieties offer excellent health benefits, especially when prepared with minimal added fats and sodium. Generally, oyster and shiitake mushrooms are renowned for their higher fiber content, contributing to digestive health. Portobello mushrooms, on the other hand, are often cited as being among the highest in Vitamin D, particularly if they have been exposed to UV light. All types provide a good source of B vitamins, antioxidants, and essential minerals, making them a nutritious addition to any diet.
Absolutely! The stems of baby bella mushrooms are perfectly edible and contain much of the same flavor and nutrients as the caps. Once you’ve cleaned them of any dirt, you can cook them whole, dice them along with the caps, or even chop them separately for stocks or sauces. There’s no need to remove them unless you prefer a specific aesthetic or texture for your dish.
While it’s possible to steam mushrooms in the Instant Pot, my preferred method, and the one detailed in this recipe, combines sautéing with pressure cooking in a flavorful liquid. This approach delivers a far superior result, infusing the mushrooms with rich, buttery, and garlicky goodness that steaming alone cannot achieve. It allows for a deeper flavor profile and a more tender, yet still firm, texture. Trust me, cooking them in the sauce is undeniably better!
Yes, you can freeze cooked Instant Pot mushrooms. Allow them to cool completely, then transfer them to an airtight freezer-safe container or a heavy-duty freezer bag. They can be stored in the freezer for up to 3 months. When ready to use, thaw them in the refrigerator overnight and gently reheat on the stovetop or in the microwave. Keep in mind that their texture might be slightly softer after thawing.
The Instant Pot is fantastic for cooking various vegetables alongside mushrooms. Some excellent additions include diced carrots, bell peppers, asparagus, or green beans. Ensure that any additional vegetables have similar cooking times or are added in a way that prevents overcooking, perhaps by adding them later during a sauté phase or choosing varieties that hold up well under pressure.
Discover More Irresistible Instant Pot Vegetable Recipes
Once you’ve mastered this delicious mushroom recipe, be sure to print out our comprehensive Instant Pot vegetable cook times sheet. It’s an invaluable tool that will guide you in preparing a wide array of vegetables to perfection. You’ll especially love our pressure cooker green beans, a recipe that has become my daughters’ absolute favorite side dish. And for those who enjoy a different cooking method, our air fryer green beans are a very close second in popularity!
