Step 1

Preheat the oven to 180˚C.

Step 2

Line a shallow rectangular lamington pan or similar with baking paper.

Step 3

In a large bowl, whisk together the icing sugar, cocoa and salt. Stir in the vanilla and egg whites.

Step 4

Whisk until the batter is just moistened then stir in the choc chips.

Step 5

Pour the batter into the lamington pan and bake for 20 - 25 minutes until the top is glossy and cracked.

Step 6

Let your brookie cool before lifting it out of the pan and cutting it into squares. Serve with a scoop of vanilla ice cream for a decadent mid-week dessert.