Why are my air fryer brussels sprouts not crispy?

Usually the basket is too full, or they weren't cut-side down. Air needs to circulate around each sprout, and the flat cut face is where the browning happens. Cook in two batches and arrange them deliberately.

Do I need to boil brussels sprouts before air frying?

No. Parboiling adds water, which is the enemy of crisp edges. Raw halved sprouts cook through completely in 12 to 15 minutes at 375°F.

Can I use frozen brussels sprouts in the air fryer?

Yes, but don't thaw them and expect a softer result. Cook from frozen at 400°F for 18 to 20 minutes, shaking twice. The extra moisture means they won't char the same way fresh ones do.

What temperature is best for air fryer brussels sprouts?

375°F gives you crisp outsides and tender middles in about 14 minutes. Higher temperatures char the leaves before the centers soften; lower ones dry them out before they brown.

Home › Air Fryer Recipes › Air fryer brussels sprouts

Air fryer brussels sprouts

By Ami · September 7, 2026 · ★★★★★ 4.9 from 152 reviews · Jump to Recipe · Print

Air fryer brussels sprouts are the reason my air fryer never goes back in the cupboard — fifteen minutes, shatteringly crisp outer leaves, tender middles, and a balsamic-parmesan finish that makes people who've hated sprouts their whole lives change their minds. The oven takes twice as long and doesn't get them this crisp.

Air fryer brussels sprouts in a cream bowl — halved sprouts with crispy charred outer leaves, balsamic glaze and parmesan, easy 15-minute low carb side dish

The air fryer does to sprouts what an oven can only approximate.

Fifteen minutes, no preheating a whole oven. Circulating hot air hits every surface at once, so you get browning in a fraction of the time. It's the same advantage that makes air fryer chicken wings better than baked ones.
The loose outer leaves turn into chips. The leaves that fall off while you're halving them crisp into something like kale chips. Throw them in — they're the best part of the basket.
9g of carbs and 4g of fiber. A properly satisfying side that leaves room on the plate for protein, and takes almost no active attention.

Here's what you'll need.

Buy sprouts of a similar size, or halve the big ones and leave the small ones whole so everything finishes together. Balsamic glaze rather than plain vinegar — the glaze clings, the vinegar runs off and steams. Fresh parmesan grated at the end, not the pre-grated shaker kind.

Ingredients for air fryer brussels sprouts in small bowls — halved brussels sprouts, olive oil, balsamic glaze, honey, garlic powder, parmesan, salt and pepper

Here's how it all comes together.

Step 1 — Trim and halve

Trim the stem ends and halve each sprout lengthwise, keeping any leaves that fall off. Toss everything with olive oil, garlic powder, salt and pepper until glossy — sprouts need more oil than you'd think to crisp rather than dry out.

Brussels sprouts being trimmed and halved on a wooden board with loose leaves saved

Step 2 — Air fry cut-side down

Arrange the halves cut-side down in the basket in a single layer and cook at 375°F for 12 to 15 minutes, shaking once at the 8-minute mark. Cut-side down gives you a flat seared face; tossed in randomly they brown unevenly.

Halved brussels sprouts arranged cut-side down in an air fryer basket before cooking

Step 3 — Finish with balsamic and parmesan

Tip the hot sprouts into a bowl and toss with the balsamic glaze, honey and parmesan while they're still steaming, so everything clings. Serve immediately — they're at their best in the first five minutes.

Crispy charred air fryer brussels sprouts being tossed with balsamic glaze and grated parmesan in a bowl

Things I learned while testing this recipe.

Cut-side down, single layer. That flat face is where the caramelization happens. A jumbled basket gives you patchy results.
Keep the loose leaves. They crisp into the best bit of the whole dish. Don't sweep them off the board.
Glaze after, never before. Balsamic glaze and honey both contain sugar, which burns at 375°F. Toss them in once the sprouts are out.
Cook in two batches if you need to. An overfilled basket steams. Two eight-minute batches beat one crowded fifteen-minute one.

Make it ahead, or make it your own.

Trim them days ahead. Halved sprouts keep 4 days raw in the fridge in a sealed container, which makes this a two-minute weeknight side.
Add bacon or pancetta. Diced bacon added for the last 6 minutes renders and crisps alongside them. It's excellent, and it's how these end up on holiday tables.
Change the finish. Hot honey and chili flakes; lemon zest and pine nuts; soy, sesame and scallion. The cooking method stays identical.

Here's what I'd serve with this.

Roast chicken, steak or pork — sprouts go with nearly any protein.
Air fryer chicken thighs cooked straight after in the same basket.
Hot honey chicken for a sweet-and-savory plate.
Roasted cauliflower alongside for a two-vegetable low-carb dinner.
A Thanksgiving table, where these disappear faster than anything else.

Just in case you have leftovers.

Storing: refrigerate in an airtight container for up to 4 days. They lose their crunch overnight, as all crisp vegetables do, but they're still very good chopped cold into a grain bowl or salad.

Reheating: back into the air fryer at 375°F for 3 to 4 minutes and they crisp up almost perfectly. Skip the microwave entirely — it turns them soft and slightly sulfurous.

More air fryer recipes...

Air fryer chicken wings — crispier than deep fried, no oil

Roasted cauliflower — crispy edges, 30 minutes, endlessly useful

Fried cabbage — caramelized with bacon in 20 minutes

Air fryer brussels sprouts

★★★★★ 4.9 from 152 reviews — air fryer brussels sprouts with shatteringly crisp outer leaves and tender middles, finished with balsamic glaze and parmesan. 15 minutes, 9g carbs.

Prep 10 min · Cook 15 min · Total 25 min · Serves 4 · Category: Air Fryer Recipes · Cuisine: American

Ingredients

1 1/2 lb brussels sprouts, trimmed and halved
2 1/2 tbsp olive oil
1 1/2 tsp garlic powder
1 tsp kosher salt
1/2 tsp black pepper
2 tbsp balsamic glaze
1 tsp honey
1/3 cup freshly grated parmesan

Instructions

Prep. Trim and halve the sprouts, keeping any loose leaves. Toss with the olive oil, garlic powder, salt and pepper until glossy.
Arrange. Place cut-side down in the air fryer basket in a single layer, adding the loose leaves.
Cook. Air fry at 375°F for 12-15 minutes, shaking once at 8 minutes, until deeply browned and crisp.
Finish. Tip into a bowl and toss with the balsamic glaze, honey and parmesan while hot.
Serve. Serve immediately, while the edges are still crisp.

Notes: Arrange cut-side down in a single layer for the best caramelization. Cook in two batches rather than crowding the basket. Add balsamic and honey only after cooking — the sugar burns at 375°F. Keep the loose leaves; they crisp into the best part. Add diced bacon for the last 6 minutes if you like. Reheat at 375°F for 3-4 minutes to restore crispness.

Nutrition (per serving, estimated): 175 calories · 7g protein · 15g carbs · 11g fat · 5g fiber

Super Easy Ninja Crispi Air Fryer Cookbook cover

If the air fryer is doing most of your cooking, this cookbook earns its shelf space.

Super Easy Ninja Crispi Air Fryer Cookbook for Crispy by Jordan Wells is built for exactly this kind of cooking — short ingredient lists, real timings that actually work, and fried-food texture without the oil. Weeknight food you'll cook on repeat.

Get the cookbook on Amazon

FAQ

Why are my air fryer brussels sprouts not crispy?: Usually the basket is too full, or they weren't cut-side down. Air needs to circulate around each sprout, and the flat cut face is where the browning happens. Cook in two batches and arrange them deliberately.
Do I need to boil brussels sprouts before air frying?: No. Parboiling adds water, which is the enemy of crisp edges. Raw halved sprouts cook through completely in 12 to 15 minutes at 375°F.
Can I use frozen brussels sprouts in the air fryer?: Yes, but don't thaw them and expect a softer result. Cook from frozen at 400°F for 18 to 20 minutes, shaking twice. The extra moisture means they won't char the same way fresh ones do.
What temperature is best for air fryer brussels sprouts?: 375°F gives you crisp outsides and tender middles in about 14 minutes. Higher temperatures char the leaves before the centers soften; lower ones dry them out before they brown.