Mix the flour, baking soda and salt in a medium bowl and keep it aside. In the meantime, cream the butter and sugars together in the bowl of an electric mixer with a paddle attachment until light and fluffy. Add the egg and vanilla extract and beat until smooth. Add in the flour, baking soda and salt mixture. Stir in the chocolate chips and chopped macadamia nuts. Drop spoonfuls of dough onto a cookie sheet covered with some baking paper.

Bake the cookies in a preheated oven at 175ºC – 350ºF for 10-12 minutes, or until the bottoms are golden brown. As Julie says, the tops might still look doughy but they will cook as they sit on the cookie sheet. Let them sit on the cookie sheets for 5 minutes, then put them on a wire rack to cool down completely.