Preheat oven to 350

Whisk together flour and baking powder in a large bowl

Beat together peanut butter, butter, and sugar until smooth and creamy then beat in the egg

Gradually beat in flour a little bit at a time until combined

Stir in macadamia nuts and white chocolate chips

Line a baking sheet with parchment paper

Using a 1 tablespoon size scoop, scoop out dough, scraping on the side so no extra dough remains, transfer to baking sheet two inches apart

Use a fork to gently press down one direction then the opposite direction to about 1/2 inch height

Bake 8-10 minutes until lightly golden

Cool on wire rack