Make Dry Mixture: In a bowl, gently whisk the flour, baking soda, and salt.
Make Wet Mixture: In a separate bowl, mix the melted butter, light brown sugar, granulated sugar, vanilla extract, egg, and egg yolk.
Combine Wet & Dry Mixtures: Combine the dry mixture with wet mixture and gently mix together.
Add Chocolate Chips & Nuts: Fold in the white chocolate chips and macadamia nuts.
Prepare Baking Sheet: Use a lined or nonstick pan and, using an ice cream scoop, place the cookie dough onto the pan about 2 inches apart. These are meant to be big cookies!!