Add the flour, spices, and plant-based milk to a big bowl. Combine well until you have a perfectly smooth batter with no lumps.
If you find the batter too thick, you can add some more plant-based milk or water.
Break the cauliflower into florets, add to the batter, mix well, and ensure they are all completely coated.
Add the bread crumbs to a bowl and using your hands, bread each floret by dipping it into the breadcrumbs and place on a plate or directly to the air-fryer basket.
To air-fry the cauliflower, you may need to make two batches depending on your air-fryer size and the cauliflower you are using. Using a cooking brush, add some oil to the florets.
Set the air-fryer to 180C (350F), add the breaded florets into the air fryer basket, and air-fry for 18 minutes. If you are adding a second batch, you can reduce the time to 16 minutes as the air-fryer will already be hot.