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Crispy Air Fryer Brussels Sprouts
Caramelized, nutty Brussels sprouts with crispy outer leaves — even Brussels sprout skeptics love these.
Total Time
20 min
Difficulty
Easy
Servings
4
Calories
110 cal
Why This Works
Brussels sprouts contain natural sugars that caramelize at high heat, transforming their bitter flavor into a nutty sweetness. The air fryer's intense heat creates this caramelization on the cut surface while the outer leaves become crispy chips. This is the Maillard reaction at its best — the same chemistry that makes a good sear on a steak.
My Recipe Testing Notes
The secret to great Brussels sprouts is cutting them in half — this creates a flat cut surface that caramelizes beautifully against the hot basket. I tested whole vs. halved at 400°F for 15 minutes: halved sprouts had dramatically better caramelization and crispier outer leaves. I also tested with and without balsamic glaze: a drizzle of balsamic after cooking adds a sweet-tart complexity that balances the natural bitterness perfectly.
Ingredients
Trimmed and halved through the stem
Drizzle after cooking
Optional
Instructions
Trim the stem end of each Brussels sprout and cut in half through the stem.
Toss with olive oil, salt, pepper, and garlic powder until evenly coated.
Place cut-side down in the air fryer basket in a single layer.
Air fry at 400°F for 12-15 minutes, shaking the basket once halfway through.
Drizzle with balsamic glaze and sprinkle with parmesan immediately after removing from the air fryer. Serve hot.
Frequently Asked Questions
Why are my Brussels sprouts mushy?
Overcrowding is the main culprit. If sprouts are piled on top of each other, they steam instead of roast. Cook in a single layer, cut-side down, for best results.
Can I use frozen Brussels sprouts?
Fresh is strongly preferred. Frozen Brussels sprouts have already been blanched and contain more moisture, which makes achieving crispy results difficult. If using frozen, add 5 minutes and expect softer results.
What else can I add to them?
Crispy bacon bits, toasted pine nuts, dried cranberries, or a drizzle of honey all work beautifully. For a spicy version, add red pepper flakes before cooking.
Written by Sarah Jenkins
Former restaurant line cook turned home kitchen obsessive. I've tested over 200 air fryer recipes and I share exactly what works, what doesn't, and the temperatures that make the difference.
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