To make gift jar: Layer each ingredient, pressing down firmly with the back of a spoon to create tight, even layers in the jar.
To make brownies: Preheat oven to 160C. Place the jar ingredients in a large bowl.
Add 150g melted unsalted butter, 1 teaspoon vanilla extract and 3 lightly beaten eggs and mix well to combine.
Pour the mixture into a lightly greased 20cm square baking tin lined with non-stick baking paper. Bake for 30-35 minutes or until just set.
Allow to cool completely in the tin. Cut into squares to serve.