Preheat the oven to 250 F
Line baking sheet with parchment paper
Using a mixer, beat egg white until frothy. Add in water and vanilla and continue mixing
Stir in cinnamon, sugar and salt
Add in peanuts and coat with egg mixture completely using a large spoon
Spread the peanuts evenly on to the baking sheet and bake for 1 hour, being sure to stir every 15 minutes
Enjoy!