Air Fryer Mushrooms and Onions is a fantastic quick side dish that you can make with pantry staples. You just need need 15 mins to make this sautéed mushrooms and onions in air fryer. Perfect for sandwiches, burgers, as pizza topping, and as a healthy side dish.
Air Fryer Onions and Mushrooms
If you want a quick, healthy and effortless vegetable side dish than this onions and mushrooms in air fryer won't disappoint you! The slightly tender browned mushrooms & the onions caramelized around the edges make a delicious combo.
If you love caramelized mushrooms and onions you'll forever love this easy air fryer mushrooms recipe. You can use white button mushrooms, Baby Bella or cremini mushrooms.
Ingredients
Find the Ingredients with actual measurements at the bottom of the post. The list below is just a reference.
- Mushrooms: I used Baby Bella mushrooms. You can use white button mushrooms or cremini mushrooms.
- Onion: We love yellow onion as it doesn't have a pungent flavor and goes very well with several dishes like burgers, sandwiches, fajitas, pizzas, salads, you name it! If you love a more mellowed down flavor use white onion and for a strong flavor use red onion.
- Seasoning: Salt (add according to your own personal taste preference), crushed black pepper & red pepper flakes. This will add a subtle kick to this roasted mushrooms and onions.
- Soy Sauce: Use either low sodium soy sauce or sub it with coconut aminos or tamari. You'll love the flavor. The subtle tang and depth of flavor goes so well with mushrooms.
- Oil: Use either extra light or light olive oil.
- Cooking oil spray: We prefer using avocado cooking oil spray as it has higher smoke point and perfect for high heat cooking. You can use any cooking oil you prefer.
Top Tips
- How to clean Mushrooms: Rinse the mushrooms in colander under running tap water to remove all the dirt. Drain and than pat them dry with the help of kitchen towels. Do not soak the mushrooms in water as they will become soggy while air frying and would release lots of moisture.
- Cut Mushrooms: If your mushrooms are on the larger side do cut them in quarters. I love to halve the mushrooms as they do shrink up a bit in the air fryer.
- Spicy Onions and mushrooms: For extra heat double the amount of red pepper flakes mentioned in the recipe.
- Seasonings: You can play around with the seasonings and develop new flavors. For instance add about ¼ teaspoon garlic powder if you love garlic flavor. You can also add dried herbs and come up with more flavor.
How to cook mushrooms and onions in air fryer?
Find the detailed step by step recipe along with measurements + Video at the bottom of the post.
Step #1 Clean, dice Mushrooms and slice onion
- Clean Mushrooms: Rinse the mushrooms in a colander under running tap water until all the dirt is removed. Allow them to drain for sometime and than pat dry the mushrooms with the help of kitchen towels. Never soak mushrooms in water!
- Dice Mushrooms: Dice the mushrooms into halves. If your mushrooms are larger you may quarter them. Do not slice the mushrooms as they shrink quite a bit while air frying.
- Slice Onion: Slice the onion roughly into ¼ inch or ½ inch slices.
Step #2 Season Mushrooms and Onions
- Season Mushrooms: Add all the seasonings and soy sauce into the bowl containing the mushrooms and onions. Toss them well until they are well coated with the seasoning and the soy sauce.
Step #3 Air Fry
- Air Fry: Pre-heat the air fryer at 390 F. Coat the air fryer basket with oil and layer the mushrooms and onions inside the basket. Air Fry for 12 mins at 390 F shaking the basket halfway through. Serve immediately for best flavor. Enjoy! I tested this recipe using my Bella air fryer and also using the instant pot air fryer lid.
How to store
The air fryer mushrooms and onions will last for 3-4 days in the fridge. Store them in an air tight container.
How to reheat
Air Fryer: Reheat the onions and mushrooms in air fryer. Do preheat the air fryer at 390 F and than reheat the roasted mushrooms and onions for 1-2 mins.
Microwave Oven: Reheat the caramelized mushrooms and onions in the microwave oven until warm or hot.
How to serve
Air fryer onions and mushrooms is such a versatile dish. You can add it in your regular meal rotations in several ways. Here's some of our favorite ways to include them in meals:
- Serve them as a healthy side dish to your choice of proteins.
- Top Pizzas.
- Add in burgers.
- Add in sandwiches.
- Top your veggie salads.
- Add them to your vegetarian or vegan Buddha bowls.
FAQs
If you love roasted or caramelized mushrooms and onions than you may air fry mushrooms and onions for 12 mins at 390 F. This setting will reward you with slightly tender caramelized mushrooms and browned edged onions. So good!
Yes, you should wash mushrooms in a colander to remove the dirt, drain them completely and pat them dry with kitchen towels. You should never soak mushrooms in water.
Mushrooms would last for 7 days in the fridge.
Brown spots on mushrooms are a sign that they are going bad and are going to decay soon. The best thing that you can do is to keep a close eye on your mushrooms throughout the entire time they're in the fridge. If you notice them getting darker, soggy or developing dark spots, it's time to use them or lose them.
Herbs that pair well with mushrooms are basil, dill, thyme and parsley. You can also try using cilantro for a different flavor profile.
I LOVE HEARING FROM YOU! If you try this Air Fryer Mushrooms and Onions recipe, please let me know! Leave a comment and rate it below. I would love to hear how it turned out for you, or any changes you make.
Air Fryer Mushrooms and Onions
Equipment
- 1 Air Fryer
Recipe Video
Ingredients
- 8 ounce Baby Bella Mushrooms - **cleaned and halved.
- 1 medium onion - ** yellow onion sliced into ¼ or ½ inch thick slices.
- 2 teaspoon soy sauce - **Use low sodium soy sauce or Tamari or Coconut Aminos.
- ½ teaspoon red pepper flakes - **skip if heat intolerant or making the recipe for kids.
- ¼ teaspoon ground black pepper
- 2 tablespoon olive oil - **use light or extra light olive oil.
- salt to taste - **use according to your personal taste preference.
- cooking oil spray - **we prefer avocado cooking oil spray.
Instructions
Prep Mushrooms and Onion
- Clean Mushrooms: Rinse the mushrooms in a colander under running tap water until all the dirt is removed. Allow them to drain for sometime and than pat dry the mushrooms with the help of kitchen towels. Never soak mushrooms in water!
- Dice Mushrooms: Dice the mushrooms into halves. If your mushrooms are larger you may quarter them. Do not slice the mushrooms as they shrink quite a bit while air frying. Slice the onion roughly into ¼ inch or ½ inch slices.
- Season Mushrooms: Add all the seasonings and soy sauce into the bowl containing the mushrooms and onions. Toss them well until they are well coated with the seasoning and the soy sauce.
Air Fry Mushrooms and Onions
- Air Fry: Pre-heat the air fryer at 390 F. Spray the air fryer basket with cooking oil spray and layer the mushrooms and onions inside the basket. Air Fry for 12 mins at 390 F shaking the basket halfway through. Serve immediately for best flavor. Enjoy! I tested this recipe using my Bella air fryer and also using the instant pot air fryer lid. You might slightly have to adjust the cook time depending on your air fryer brand, model, size.
Notes
- Large Mushrooms: Dice them into quarters.
- Best Mushrooms: Baby Bella, Cremini or white mushrooms.
- Is the recipe spicy: Yes, it's mildly spicy. If you are heat intolerant do not add the red pepper flakes.
- Can I use white or red onion: Yes you can. The white onion will make the dish slightly sweet, whereas the red onion will make it more pungent and earthy.
Lynda says
First attempt with mushrooms and onoions
Worked out perfectly
I tossed them more than once because I put a lot in the basket
I didn’t cook them to serve immediately so I did them slightly under so they would finish cooking upon re heat in my air fryer
Don’t leave out the soya sauce
It’s a winner
Thanks
mtr_admin says
So glad you loved the recipe Lynda 🙂 Thanks so much for the amazing feedback, totally appreciate it! - Meghna xoxo.
Sammy says
Excellent recipe! My family enjoyed every bit of it. Thanks!
mtr_admin says
Thanks Sammy for the wonderful feedback! Appreciate it:)