In a large bowl, cream the softened butter, brown sugar, and granulated sugar until light and fluffy.
Beat in the eggs one at a time, then mix in the vanilla extract.
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Stir in the white chocolate chips and chopped macadamia nuts.
Preheat the oven to 350°F. Line baking sheets with parchment paper.
Drop rounded tablespoons of dough onto the prepared baking sheets, spacing them about 2 inches apart.
Bake for 10 to 12 minutes, or until the edges are lightly golden.
Allow the cookies to cool on the baking sheet for 5 minutes, then transfer them to a wire rack to cool completely.