These Air Fryer Steak Bites with Mushrooms are juicy, tender, and perfectly seasoned with garlic, butter, and herbs. The steak develops a delicious seared crust while the mushrooms become tender and flavorful. Ready in under 20 minutes, this easy recipe is perfect for busy weeknights, meal prep, or a low-carb dinner.

Recipe Overview

Ingredients

Steak & Mushrooms

• 1½ pounds (680g) sirloin steak, cut into 1-inch cubes
• 8 ounces (225g) whole baby bella or cremini mushrooms
• 2 tablespoons olive oil
• 2 tablespoons unsalted butter, melted
• 4 cloves garlic, minced

Seasonings

• 1 teaspoon garlic powder
• 1 teaspoon onion powder
• 1 teaspoon smoked paprika
• 1 teaspoon Italian seasoning
• ½ teaspoon kosher salt
• ½ teaspoon freshly ground black pepper

Garnish

• 2 tablespoons chopped fresh parsley
• Fresh thyme leaves (optional)
• Lemon wedges

Equipment Needed

• Air fryer
• Large mixing bowl
• Tongs
• Meat thermometer

Instructions

Step 1: Prepare the Ingredients

Pat the steak cubes dry with paper towels.

Clean the mushrooms with a damp paper towel and leave small mushrooms whole or halve larger ones.

Step 2: Season

In a large bowl, combine:

• Olive oil
• Melted butter
• Garlic
• Garlic powder
• Onion powder
• Smoked paprika
• Italian seasoning
• Salt
• Black pepper

Add the steak cubes and mushrooms.

Toss until evenly coated.

Step 3: Preheat the Air Fryer

Preheat the air fryer to 400°F (200°C) for 3 minutes.

Step 4: Air Fry

Arrange the steak bites and mushrooms in a single layer in the air fryer basket.

Cook at 400°F (200°C) for 8–10 minutes, shaking the basket halfway through.

Steak Doneness Guide

Remove the steak about 5°F before your desired temperature, as it will continue cooking while resting.

Step 5: Rest

Transfer the steak bites and mushrooms to a serving platter.

Let the steak rest for 5 minutes.

Step 6: Garnish & Serve

Sprinkle with:

• Fresh parsley
• Fresh thyme
• A squeeze of fresh lemon juice (optional)

Serve immediately.

Tips for Perfect Air Fryer Steak Bites

Choose the Right Cut

Sirloin offers excellent flavor and tenderness, but ribeye, strip steak, or tenderloin also work beautifully.

Pat the Steak Dry

Removing excess moisture helps create a flavorful crust.

Avoid Overcrowding

Cook in batches if necessary so the steak sears instead of steams.

Use a Meat Thermometer

Checking the internal temperature helps achieve your preferred doneness.

Flavor Variations

Garlic Parmesan

Toss the cooked steak bites with grated Parmesan cheese and extra garlic butter.

Cajun Style

Replace the Italian seasoning with 2 teaspoons Cajun seasoning.

Herb Butter

Finish with melted butter mixed with fresh rosemary, thyme, and parsley.

Spicy Steak Bites

Add:

• ½ teaspoon cayenne pepper
• Crushed red pepper flakes

Asian-Inspired

Replace the Italian seasoning with:

• 2 tablespoons soy sauce
• 1 teaspoon sesame oil
• 1 teaspoon grated ginger

Garnish with sliced green onions and sesame seeds.

What to Serve With

Vegetables

• Air Fryer Asparagus
• Roasted Brussels Sprouts
• Garlic Green Beans
• Broccoli

Potatoes

• Air Fryer Crispy Garlic Potatoes
• Mashed Potatoes
• Baked Potatoes

Salads

• Mediterranean Greek Salad
• Caesar Salad
• Garden Salad

Bread

• Garlic Bread
• Dinner Rolls

Storage Instructions

Refrigerator

Store leftovers in an airtight container for up to 3 days.

Freezer

Freeze cooked steak bites for up to 2 months.

Thaw overnight in the refrigerator before reheating.

Reheating

Air Fryer

Reheat at 350°F (175°C) for 2–3 minutes.

Skillet

Warm over medium heat with a small pat of butter for 2–3 minutes.

Microwave

Heat in 30-second intervals until just warmed through.

Nutrition Information (Per Serving)

Frequently Asked Questions

Can I use frozen steak?

For the best texture, thaw the steak completely and pat it dry before seasoning and air frying.

Which mushrooms are best?

Cremini (baby bella), white button, or portobello mushrooms all work well. Slice larger mushrooms into even pieces.

Can I marinate the steak?

Yes. Marinate for 30 minutes to 8 hours in your favorite steak marinade before cooking. Pat dry before air frying.

How do I keep the steak tender?

Avoid overcooking and let the steak rest for 5 minutes after cooking so the juices redistribute.

Can I add other vegetables?

Absolutely. Bell peppers, onions, zucchini, or asparagus are great additions. Cut them into similar-sized pieces so they cook evenly.

Recipe Notes

✅ High in protein

✅ Low-carb and keto-friendly

✅ Ready in just 20 minutes

✅ Great for meal prep

✅ Easy one-basket meal

Make-Ahead Tip

Cut and season the steak up to 12 hours in advance. Store it covered in the refrigerator, then air fry just before serving for the freshest flavor and texture.

Serving Suggestion

Pair these steak bites with roasted vegetables, garlic mashed potatoes, cauliflower mash, or a crisp Greek salad. They’re also delicious served over rice, quinoa, or buttered noodles.

Chef’s Secret

For steakhouse-quality results, bring the steak to room temperature for 15–20 minutes before cooking and pat it completely dry. Air fry in a single layer for maximum browning, then toss the hot steak bites and mushrooms with garlic herb butter immediately after cooking. Finish with fresh parsley and a squeeze of lemon juice to brighten the rich, savory flavors.