Begin by whisking together the flour, baking soda, and salt in a medium bowl until well combined. Set aside.
In a large bowl, beat the softened butter with the granulated and brown sugars until light and fluffy. Use a hand or stand mixer on medium speed for 2-3 minutes.
Incorporate the eggs one at a time, mixing thoroughly after each addition, then blend in the vanilla extract for a rich depth of flavor.
Gradually incorporate the dry ingredients into the wet mixture, mixing on low speed to ensure a smooth and even blend Don’t overmix, stop as soon as the flour is fully incorporated.
Carefully incorporate the white chocolate chips and chopped macadamia nuts, ensuring an even distribution throughout the dough.
Allow the dough to chill in the refrigerator for at least 30 minutes, to deepen the flavors and improve the texture.
Once chilled, preheat the oven to 350°F (175°C) and line a baking sheet with parchment paper.
Scoop the dough into balls, roll lightly, and space them 2 inches apart on the sheet.
Bake for 10 minutes, until the edges are golden, and the centers look slightly underbaked.
Allow the cookies to rest on the baking sheet for five minutes before carefully moving them to a wire rack to cool entirely.