Cut zucchini into ¼ inch slices. You can use a mandolin if you choose. If you slice your zucchinis by hand, just make sure you keep the thickness as even as possible, so they dry evenly. Alternatively, you can shred your zucchini with a cheese grater or food processor, which ever is easiest for you. Spread the zucchini slices evenly over the dehydrator trays. Shredded zucchini will dry faster than slices.
Set the dehydrator to 125 degrees Fahrenheit. It took about 12 hours to dry it all out. Check it from time to time after about 6 hours.
To dehydrate your squash in the oven, set the temperature as low as possible and keep the door propped open about three or four inches. You may want to aim a fan at the oven door for air circulation to help the squash dry evenly. Spread your zucchini out on a cooking sheet in the center of the oven and let it dry. It may take around two to five hours.
If you have an air fryer, you can dehydrate your zucchini slices in it. Then, just lay the zucchini in a single layer and watch it carefully. After you’ve fully dehydrated your zucchinis, then you can grind them. I used a KitchenAid food processor, but you could also use a Nutribullet or blender.
Add a handful of chips at a time – or as many as your food processor can handle. I used the high speed and let the chips grind up. If this is too hard on your food processor, you can use the pulse setting, too.
You can store your Amish flour in a mason jar with a tight lid. You may want to add a silica packet (don’t open or eat it!) to your jar or vacuum seal it. Moisture will ruin the quality of your flour.