If you have an air fryer and a good piece of steak, you’re about 20 minutes away from one of the best dinners you can make at home. This air fryer garlic butter steak and mushrooms is simple, flavorful, and honestly hard to beat.
The steak comes out perfectly cooked with a nice sear on the outside, and the mushrooms get tender and golden. Then you top everything with garlic butter and fresh parsley, and it all just comes together.

You don’t need a long list of ingredients or any fancy techniques to pull this off. A few pantry staples and some fresh mushrooms are all it takes.
Whether you’re cooking for yourself or making dinner for two, this is one of those recipes you’ll keep coming back to. It’s that good and that easy.
Why You’ll Love This Recipe
Steakhouse Flavor at Home – That garlic butter combo on a perfectly cooked steak gives you the kind of flavor you’d normally pay big money for at a fancy restaurant, but you’re making it right in your own kitchen.
The Air Fryer Nails the Sear – Air fryers are amazing at getting that crispy, caramelized crust on steak that’s hard to achieve in a regular oven. The high circulating heat locks in juices while giving the outside a beautiful golden-brown finish.

Ready in Under 20 Minutes – From seasoning your sirloin to plating it up with buttery mushrooms, this whole meal comes together super fast. It’s perfect for busy weeknights when you still want something that feels special.
Garlic Butter Makes Everything Better – Melted butter with fresh minced garlic drizzled over hot steak and mushrooms is one of those combinations that just hits different. It adds a rich, savory flavor that takes this dish from good to absolutely incredible.
Ingredients
- 1 lb Sirloin Steak
- 8 oz White Button Mushrooms
- 2 tbsp Olive Oil
- 1 tsp Salt
- 1/2 tsp Black Pepper
- 3 tbsp Butter
- 3 cloves Garlic
- 1 tbsp Fresh Parsley
How to Make
Step 1
Cut the sirloin steak and white button mushrooms into bite-sized pieces.

Step 2
In a bowl, toss the steak and mushrooms with olive oil, salt, and black pepper.

Step 3
Place the mixture in the air fryer basket in a single layer and cook at 400F for 8 to 10 minutes, shaking halfway through.
Step 4
While cooking, melt the butter and mix it with minced garlic and chopped fresh parsley.

Step 5
Transfer the cooked steak and mushrooms to a bowl, pour the garlic butter over the top, and toss well before serving.

Tips
Pat the Steak Dry Before Cutting
Before you cut your sirloin into pieces, use a paper towel to pat the steak dry on both sides. This removes the surface moisture that would otherwise create steam in the air fryer.
When there’s too much moisture, the steak basically steams instead of getting that nice sear on the outside. Dry steak equals better browning, and better browning equals better flavor.
It only takes a few seconds but it makes a huge difference in how the final result looks and tastes.
Cut Everything the Same Size
When you’re cutting the steak and mushrooms into bite-sized pieces, try to keep them roughly the same size. Pieces that are about 1 inch work really well here.

If some pieces are tiny and others are large, the small ones will overcook and dry out while the big ones are still catching up. Keeping things even means everything finishes cooking at the same time.
For the mushrooms, if you have smaller ones you can just cut them in half. Larger ones can be quartered so they match the size of the steak pieces.
Don’t Overcrowd the Basket
This is the most important thing with this recipe. You need everything sitting in a single layer with a little space between the pieces so the hot air can actually reach all sides.
If you pile everything on top of each other, the steak won’t sear properly and the mushrooms will turn soggy. The air fryer works by circulating hot air around the food, and when things are stacked up, that air can’t do its job.
If your air fryer is on the smaller side, cook this in two batches instead of forcing it all in at once. It’s worth the extra few minutes.
Related Recipes
- Air Fryer Steak Bites with Garlic Butter
- Air Fryer Garlic Butter Scallops
- Air Fryer Bacon Wrapped Asparagus Bundles
- Air Fryer Crispy Smashed Potatoes
- Air Fryer Crispy Brussels Sprouts & Bacon
Frequently Asked Questions
What temperature and how long do I cook the steak in the air fryer?
For sirloin steak, 400 degrees Fahrenheit works best. Cook it for about 8-12 minutes total, flipping halfway through, depending on how thick your steak is and how done you like it.
For medium-rare, aim for about 8-9 minutes. For medium, go closer to 10-11 minutes. If you like it well done, push it to 12 minutes or a little more. An instant-read thermometer is the easiest way to check without guessing.
Air Fryer Garlic Butter Steak & Mushrooms
- air fryer
- 1 lb Sirloin Steak
- 8 oz White Button Mushrooms
- 2 tbsp Olive Oil
- 1 tsp Salt
- 1/2 tsp Black Pepper
- 3 tbsp Butter
- 3 cloves Garlic
- 1 tbsp Fresh Parsley
- Cut the sirloin steak and white button mushrooms into bite-sized pieces.
- In a bowl, toss the steak and mushrooms with olive oil, salt, and black pepper.
- Place the mixture in the air fryer basket in a single layer and cook at 400F for 8 to 10 minutes, shaking halfway through.
- While cooking, melt the butter and mix it with minced garlic and chopped fresh parsley.
- Transfer the cooked steak and mushrooms to a bowl, pour the garlic butter over the top, and toss well before serving.