Step 1: Preheat your oven to 350°F (175°C). This ensures that your cookies bake evenly and achieve the perfect texture.
Step 2: In a medium bowl, whisk together the all-purpose flour, baking soda, and kosher salt. Set this mixture aside.
Step 3: In a large mixing bowl, use an electric mixer to cream together the good quality butter, packed light brown sugar, and granulated sugar until light and fluffy, about 2-3 minutes.
Step 4: Add the large egg, large egg yolk, pure vanilla extract, and pure almond extract to the creamed mixture and beat until well combined.
Step 5: Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until just combined.
Step 6: Gently fold in the white chocolate chips and chopped macadamia nuts until evenly distributed.
Step 7: Using a cookie scoop or spoon, drop rounded balls of dough onto the prepared baking sheet, leaving about 2 inches between each cookie.
Step 8: Sprinkle a small pinch of sea salt flakes over each cookie dough ball before baking.
Step 9: Bake for 10-12 minutes, or until the edges are lightly golden and the centers look set but still soft.
Step 10: Allow the cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.