Preheat oven to 300ºF.

Whisk the egg white in a cup. Pour the egg whites over the nuts, stirring until the nuts are coated with egg white.

In a small bowl, stir the cinnamon, sugar, and salt together. Stir in the vanilla. Add the cinnamon sugar mixture to the nuts, a little at a time, while stirring.

Spread the coated nuts on an ungreased baking sheet. Bake for 20 minutes without stirring. Use a spatula to remove the nuts from the hot baking sheet immediately. Allow to cool thoroughly before storing in tightly closed container. Store in a cool place.