Air Fryer Zucchini is a quick vegetable side dish made with fresh zucchini, olive oil, garlic, and Parmesan cheese. The zucchini cooks until tender inside with lightly browned, savory edges, while the air fryer keeps the cooking time short and cleanup simple.

This recipe uses thick zucchini pieces so they hold their shape instead of becoming overly soft. A short air-fryer cook at high heat gives the zucchini enough color without requiring a long roasting time.

Why This Recipe Works

Thick-cut zucchini holds its shape: Larger pieces stay tender without turning mushy during the quick air-fryer cook.
A light coating of oil promotes browning: Olive oil helps the surface develop golden edges while preventing the zucchini from drying out.
Parmesan adds a savory crust: Finely grated cheese clings to the seasoned zucchini and browns during cooking.
High heat reduces excess moisture: Air circulation helps the zucchini cook quickly and develop better color than steaming or low-temperature cooking.
Cooking in a single layer matters: Space between the pieces allows hot air to circulate around the zucchini instead of trapping steam.

Equipment Needed

Air fryer, 5-quart capacity or larger
Large mixing bowl
Tongs or spatula

Ingredients List

1 1/2 pounds zucchini (680 g), trimmed and cut into 1/2-inch (1.3 cm) thick half-moons
1 tablespoon olive oil (15 ml)
1 teaspoon garlic powder (3 g)
1/2 teaspoon Italian seasoning (1 g)
1/2 teaspoon kosher salt (3 g)
1/4 teaspoon freshly ground black pepper (0.5 g)
1/3 cup finely grated Parmesan cheese (30 g)
1 tablespoon chopped fresh parsley (4 g), optional, for serving

Ingredient Notes and Substitutions

Zucchini: Medium zucchini are easiest to cut into evenly sized pieces. Yellow summer squash can replace some or all of the zucchini with a very similar texture, although the color will change.
Olive oil: A small amount helps the zucchini brown and helps the seasonings adhere. Avocado oil or another neutral high-heat cooking oil can be substituted.
Parmesan cheese: Finely grated Parmesan coats the zucchini better than large shreds and adds salty, nutty flavor. Pecorino Romano can be substituted, but it will taste sharper and saltier.
Garlic powder: Garlic powder distributes evenly over the zucchini and is less likely to burn than fresh minced garlic during high-heat air frying. If using fresh garlic, add it after cooking instead for a fresher flavor.
Italian seasoning: This provides a simple blend of dried herbs. You can substitute 1/4 teaspoon dried oregano plus 1/4 teaspoon dried basil.

Step-by-Step Instructions

Step 1: Preheat the air fryer.

Preheat the air fryer to 400°F (205°C) for about 3 minutes. If your air fryer does not require preheating, you can begin with the zucchini immediately, but the first batch may need an extra minute or two.

Step 2: Cut the zucchini evenly.

Trim both ends of the zucchini and cut it into 1/2-inch (1.3 cm) thick half-moons. Try to keep the pieces similar in size so they finish cooking at the same time.

Step 3: Season the zucchini.

Place the zucchini in a large bowl. Add the olive oil, garlic powder, Italian seasoning, kosher salt, and black pepper. Toss until the pieces are lightly and evenly coated.

Step 4: Add the Parmesan.

Sprinkle the Parmesan over the seasoned zucchini and toss gently until the cheese is distributed over the pieces. Avoid pressing the zucchini together, which can encourage moisture to collect.

Step 5: Arrange in the basket.

Place the zucchini in the air-fryer basket in a single layer. Leave a little space between pieces when possible. If the basket is crowded, cook in two batches.

Step 6: Air fry.

Cook at 400°F (205°C) for 5 minutes. Shake the basket or turn the zucchini with tongs, then continue cooking for another 4 to 5 minutes.

Step 7: Check for doneness.

The zucchini is ready when the centers are tender when pierced with a fork and the edges are lightly browned. If you prefer more browning, continue cooking for 1 to 2 minutes, checking frequently so the Parmesan does not burn.

Step 8: Garnish and serve.

Transfer the zucchini to a serving dish and sprinkle with the optional fresh parsley. Serve immediately while the edges are at their crispest.

Tips for Success

Do not cut the zucchini too thin. Thin slices soften quickly and are more likely to become limp.
Avoid overcrowding the basket. If the zucchini is piled up, it will steam rather than brown.
Do not add extra oil unnecessarily. Zucchini already contains considerable moisture, and too much oil can make the finished pieces greasy.
Use finely grated Parmesan. It adheres more evenly and develops better browning during the short cook.
Serve immediately. Air-fried zucchini is at its best right after cooking, before the moisture softens the browned edges.

Storage, Freezing, and Make-Ahead Instructions

Store leftover Air Fryer Zucchini in an airtight container in the refrigerator for up to 3 days. The zucchini will soften during storage.
To reheat, place it in a 375°F (190°C) air fryer for 3 to 5 minutes, or until heated through and lightly browned again. Avoid microwaving if you want to preserve as much of the browned texture as possible.
For make-ahead preparation, cut and season the zucchini shortly before cooking. Do not season it several hours in advance because the salt will draw moisture from the zucchini and can make the finished dish softer.
Freezing is not recommended because zucchini becomes noticeably softer and more watery after thawing.

FAQ

Can I use yellow squash instead of zucchini?

Yes. Yellow summer squash can be used in the same quantity and cut into similarly sized pieces. The texture will be very similar, although the finished dish will have a brighter yellow color.

Why is my air fryer zucchini soggy?

The most common causes are overcrowding, excess oil, or cutting the zucchini too thin. Cook the pieces in a single layer, use only the listed amount of oil, and keep the pieces about 1/2 inch thick.

Do I need to peel the zucchini?

No. The skin is edible and helps the zucchini maintain its shape during cooking. Simply wash and dry the zucchini well before cutting.

Can I use fresh garlic?

Yes, but fresh minced garlic can brown quickly at 400°F (205°C). For the most reliable result, cook the zucchini with garlic powder and add a small amount of fresh minced garlic after cooking if desired.

Can I make this without Parmesan?

Yes. The zucchini will still cook properly without the cheese, but it will have less savory flavor and browning. You can replace the Parmesan with Pecorino Romano or simply omit it.