Shred parmesan cheese with a box grater or food processor
Place paper towels onto dehydrator sheets. This will help absorb the fat that comes from the cheese. Make sure to change out once during the process.
Spread cheese in a thin layer across the paper towel-covered dehydrator trays.
Dry at 125°F / 35°C for up until parmesan shreds are no longer 'wet' from the fats, and snap easily. You can get a handy dehydrating temperature magnet for your machine or fridge and never worry about temps again!
Notes
It's important to change the paper towels at least once during the process. Twice if necessary.
Do not use fruit leather sheets or silicone sheets to dry on, even if paper towels on top.
Rehydrating Dried Parmesan
Place in a thin layer and spritz with water. I use a small misting water bottle for doing this kind of rehydration.
Allow the water to absorb and spritz more if necessary. You don't want to water log the cheese.
Add to Meals in a Jar at the time of use. I don't recommend storing the cheese inside the jar unless it's a short-term meal. If it's longer-term, keep it separate and use it when making the meal.