Step 1 - Flour Dusting
The flour coating provides an adhesive dry surface for the wet egg substitute to cling to. Without flour first, the wet binder slides off the naturally smooth, slightly moist zucchini surface. With flour, the binder adheres evenly.
FYI toss 2-3 pieces at a time in the flour bowl rather than all at once. This prevents clumping and ensures each piece gets even flour coverage.
Step 2 - Egg Substitute Dip
The wet binder layer is what the panko coating sticks to. It needs to be thick enough to coat the flour-dusted surface completely but thin enough to not pool.
Aquafaba technique- Pour into a shallow bowl and whisk briefly until slightly frothy. The aeration helps it coat more evenly.
Plant milk + cornstarch technique- Whisk together until the cornstarch is fully dissolved before using undissolved cornstarch creates lumpy coating.
Step 3 - Panko Coating
Press the zucchini piece firmly into the panko mixture on all sides. Press rather than dip pressing the panko into the wet surface creates better adhesion than rolling, which can displace the wet layer.
Step-by-Step Instructions For
Step 1 - Preheat and Prep
Preheat the air fryer to 400°F for 5 minutes before you add any food. A cold air fryer produces steamed rather than crispy fries the preheated basket creates immediate high-heat contact that starts the crisping process from the first second.
While the air fryer preheats, set up your three-station breading line: flour in one bowl, egg substitute in the second, panko mixture in the third.
Step 2 - Cut the Zucchini
Cut the zucchini into ½-inch thick fry-shaped sticks not rounds, not thick wedges, but consistent fry-shaped pieces approximately 3-4 inches long and ½ inch square in cross-section.
The sizing specifically matters- Thinner than ½ inch and the zucchini interior cooks through before the coating crisps properly, producing soggy fries. Thicker than ½ inch and the coating crisps before the interior softens, producing crunchy-outside-raw-inside fries.
Step 3 - Bread the Fries
Working in small batches of 2-3 pieces:
Toss in flour until lightly coated on all sides
Dip in egg substitute until evenly wet
Press into panko mixture on all sides until fully coated
Transfer to a waiting plate
Repeat until all zucchini pieces are coated.
Step 4 - Spray and Air Fry
Spray the preheated air fryer basket with cooking spray. Add the fries in a single even layer without touching. Lightly spray the tops of the fries with cooking spray this helps the panko brown evenly.
Cook at 400°F for 10 minutes, checking at the 8-minute mark.
Batch cooking- Most standard air fryers require 2 batches for one full zucchini. Keep the first batch warm in a 200°F oven on a sheet pan while the second batch cooks.
Flipping- For the crispiest result, flip the fries halfway through (at the 5-minute mark). The bottom receives more direct heat from the basket; flipping ensures both sides achieve maximum crispness.
Step 5 - Make the Garlic Aioli
While the fries cook, add sunflower oil, soy milk, minced garlic, lemon juice, agave/maple syrup, and salt to a small blender.
Blend on high speed for 5-10 seconds the mixture emulsifies rapidly into a thick, mayo-like consistency through the high-speed blending process.
The science of this aioli- The soy milk contains lecithin a natural emulsifier. When blended at high speed with oil, the lecithin creates stable oil-in-water emulsion droplets that produce the thick, creamy mayo-like consistency without any egg. This technique is specifically why soy milk is recommended over other plant milks most others don't contain the same lecithin concentration.
Taste and adjust- More lemon juice for brightness, more salt for flavor, more agave if the garlic seems too sharp.
