Melt butter in sauté pan over low- medium heat, remove pan from heat.
Stir in sugar, eggs, flour and vanilla, Kahlua (optional) mixing well.
Stir through chocolate pieces and macadamia nuts, spread mixture evenly over pan.
Bake for 30 minutes (no lid). Blondies will seem quite soft, but will firm on cooling.
Remove from oven and let Blondie set for 20 minutes in Sauté Pan. Run spatula around edge, invert onto a splatter guard and allow to cool for a further 5 minutes on cooling racks
Cut into pieces and serve, lightly dust with icing sugar and serve warm with vanilla ice-cream and raspberries if desired.
Notes
To serve immediately – Use Egg Flip to cut wedges of Blondie, which will be soft in the centre. Add raspberries into the mix for a different, fresh flavour.