Name: Air Fryer Mushrooms and Onions
Prep time: 4 min
Cook time: 12 min
Total time: 16 min
Ingredients: 1/2 pound mushrooms (white or cremini); 1 medium yellow onion; 2 teaspoons avocado oil; 1/2 teaspoon garlic powder (optional); 1/4 teaspoon salt; 1/4 teaspoon black pepper

Jump to Recipe

For a very simple yet effective topping or side dish, air fryer mushrooms and onions (cooked together) are the combination for you.

The soft onions pair perfectly with the golden brown, juicy mushrooms to create a flavor dance in your mouth!

mushrooms and onions cooked sitting in bowl on wood with fork sticking out. — Golden brown and air fried to perfection.

Ingredients

To make air fryer mushrooms and onions, you’ll only need a few ingredients:

Mushrooms – You can either use white or cremini mushrooms.
Onion – Use a medium-sized yellow onion.
Oil – We use avocado oil, but vegetable oil or canola oil also works well.
Garlic Powder – This is optional but adds some more flavor.
Salt – To add flavor; can add more or less to taste.
Pepper – Add more or less to taste.

Recipe Tips

This is a pretty easy recipe for mushrooms and onions in the air fryer but have a read through these recipe thoughts that we had while preparing them. It may be a little different preparing them together!

You can absolutely make these things separately in the air fryer. Air fryer mushrooms are yummy – and so are air fryer onions just on their own. However, when cut properly, these two things cook well together.
Don’t cut the onion into very thin pieces – otherwise they might already be turning too dark while the mushrooms aren’t soft enough yet.
Don’t submerge/soak the mushrooms in water. Otherwise they will soak up the water and won’t taste as good. Clean them with a damp (paper) towel or quickly rinse them under running water if they are very dirty.
You can modify the spices to suit your personal preferences.

We use this air fryer for our recipes and it has been great.

Step by Step Instructions

If you want to air fry mushrooms and onions, you can follow our recipe instructions in this section and check out the recipe process photos for each step.

This way, you see how we made ours and can compare.

Otherwise, the recipe card is located in the bottom of the post and it has all the instructions and cooking times/temperatures there, too.

whole mushrooms being cleaned by paper towel on wooden cutting board on counter. — Clean the mushrooms.

First, clean the mushrooms with a damp (paper) towel.

mushroom chopped into pieces on wooden cutting board on white kitchen counter. — Cut the mushrooms into pieces.

Then cut them into half (if they are on the smaller end), into quarters, or into thick slices and then into smaller pieces if you have very big mushrooms.

white onion cut into slices with half piece behind on wooden cutting board. — Cut the onion into slices.

Also, peel the onion and cut it in half. Then cut the onion into slices of even thickness.

At this time also preheat the air fryer to 380 degrees Fahrenheit.

slices onions and cut mushrooms covered in spices in white mixing bowl on white counter. — Add the mushrooms, onions, oil and spices to a bowl.

While you wait for the air fryer to heat, add the cut mushrooms and onions into a mixing bowl.

Also add oil, garlic powder (optional), salt and pepper.

slices onions and cut mushrooms coated in oil and spices in white mixing bowl on counter top. — The mushrooms and onions should be evenly coated.

Toss everything until evenly coated in oil and spices. You can also separate the onion pieces a little bit if they are still stuck together.

raw onions and mushrooms pieces in black air fryer tray on white counter. — Add the mushrooms and onions to the air fryer.

When the air fryer is hot, add the seasoned onions and mushrooms to the air fryer basket.

Shake the air fryer basket gently so that everything is spread out evenly. This will help with even cooking.

cooked mushrooms and onions in black air fryer tray. — The mushrooms and onions should be soft.

Air fry the mushrooms and onions at 380 degrees Fahrenheit for 10-13 minutes total until the onions and mushrooms are cooked and the onions are slightly browned.

Shake the air fryer basket every 4 minutes to assist with even cooking. The exact cooking time can vary by air fryer and personal preference.

cooked mushrooms and onions in bowl on wooden board with silver fork sticking out. — These mushrooms and onions tasted delicious!

When done, remove the cooked mushrooms and onions and add them to a serving bowl. Enjoy!

Storage Tips

These onions and mushrooms store well overnight. You can store in a container with a lid in the fridge. Just keep in mind that they might get softer over time.

To reheat, you could use the microwave if you only have a few left. Alternatively, you could also use the air fryer.

Just heat the mushrooms and onions at 280 degrees Fahrenheit for 3-5 minutes until hot again.

What to Serve Mushrooms and Onions With

We like these air fryer onions and mushrooms as a tasty topping for cabbage steaks or meat steak.

They also taste great as a topping on a slice of fresh crusty bread with butter.

You might also use them as a topping on Italian sausage on a bun or for a simple pasta dish!

Related Recipes

If you enjoyed this combination of onions and mushrooms, check out these other amazing air fryer combinations that work as dinner or as a tasty side dish!