White chocolate and macadamia nut cookies are one of our faves. Then we stumbled across the recipe to make them in bar form and have never looked back.
Place the butter and the brown sugar in a bowl and cream together on medium speed until a smooth batter is formed. While the machine is running, add the eggs and vanilla extract, until incorporated into the batter.
Sift together 3 cups flour and baking powder. Slowly add the flour mixture to the batter and mix on low speed until a dough is formed. Very gently fold the chips and nuts into the dough.
(You can still make this even without a mixer . . . it will just give your arm quite the workout!)
Once the dough is all blended, grease a 9 x 13 pan with non-stick cooking spray and dust with about 1 tablespoon of flour. Pour the batter into the pan and place in the preheated oven. Bake for 25 to 30 minutes, or until set yet still moist. Do not over bake.
Once cooled, drizzle with melted white chocolate, if you choose.