Step 1

Preheat oven to 160°C. Line a large roasting pan with baking paper.

Step 2

Using an electric mixer, beat eggwhites and salt in a bowl until mixture is frothy with large air bubbles. Add caster sugar, 1 tablespoon at a time, beating constantly until well combined.

Step 3

Stir demerara sugar and cinnamon into eggwhites. Add macadamia nuts and mix well to coat.

Step 4

Spread mixture over base of prepared pan. Bake for 30 minutes, stirring with a metal spoon to break up mixture every 10 minutes, or until cinnamon sugar crust feels dry.

Step 5

Cool completely in pan. Break up and place in an airtight container.