Sweet and Spicy Air Fryer Walnuts

2 cups California walnut halves and pieces

1 lightly beaten egg white

1/4 cup granulated sugar

1 teaspoon cayenne pepper

Toss the walnuts with egg white and stir to coat well. Stir together sugar and cayenne pepper and then sprinkle over with the walnuts. Spread in a single layer in an air fryer basket, working in batches if necessary. Cook for 4 minutes at 350°F or until the walnuts are crisp and caramelized, stirring once during cooking..