Step 1

Preheat oven to 400 degrees. In a large mixing bowl, cream together cold cubed butter, brown sugar, and sugar for 4 minutes or until creamy.

Step 2

Add eggs, one at a time, mixing well after each one. Add vanilla.

Step 3

Stir in flours, cornstarch, baking soda, and salt. Mix until just combined to avoid overmixing. Stir in chocolate chips, coconut, and macadamia nuts.

Step 4

Separate dough into medium-sized balls and place on a light-colored cookie sheet. Bake for 9-12 minutes or until golden brown on the top. Let them rest for at least 10 minutes to set.