On the Instant Vortex control panel, press Roast, then set time to 15 Minutes and temperature to 355ºF (180°C). Press Start.
Once Add Food appears on the display, evenly lay out the zucchini slices in the basket. Season with salt and pepper, and close.
Once they are ready, remove and put them in the blender.
Add basil, parmesan, walnuts, crushed garlic, oil. Grind until you have a creamy paste. Add more olive oil if necessary (you can leave the nuts for the end; do not grind them too much to add a bit of crunch).