The softest white chocolate chip macadamia nut cookies you will make have butter, shortening, and white chocolate instant pudding in them to make the moistest cookies you will make.
Beat eggs in mixing bowl with a hand mixer. Add sugar, butter, and shortening. When mixed well, add instant pudding. Add vanilla flavoring.
In a separate bowl, mix all dry ingredients. Gradually add dry mixture to the egg mixture.
Add white chocolate chips and macadamia nut pieces. Mix with a spatula into the cookie dough.
Using a scoop, spoon onto a baking stone or cookie sheet.
Bake for 10-12 minutes in 350° oven. When cookies are removed from the oven they should just barely be finished baking, since the pudding will continue to set as the cookies cool. Let sit for 2 minutes and then transfer to newspaper to cool.
Notes
Don't use cooling racks. Use old newspapers to set the cookies on when you take the cookies off the pan.