Preheat the oven to 275 degrees and line a baking pan with parchment paper or a silicone mat. (If you use a mat, spray it with a little cooking spray for easy clean up.)
In a medium mixing bowl, whisk together your egg white, water and vanilla until foamy. (About 30 seconds.)
Add the nuts and toss until they are all evenly coated with the egg white mixture.
In a separate bowl, whisk together your two sugars, cinnamon, salt and cayenne.
Pour the sugar mixture over the nuts and stir until well combined.
Spread your nuts evenly on our prepared baking sheet.
Throw in to your preheated oven for 20 minutes.
Pull out the baking sheet and use a nylon turner to flip and stir all the nuts, making sure to get them back in to an even layer, then return the pan to the oven for another 20 minutes, (for a TOTAL of 40 minutes.)
That’s it! Let them sit at least ten minutes once out of the oven before using. Any leftovers can be stored in a sealed container at room temperature for up to a couple of weeks.