In a large bowl combine cake mix, baking powder, eggs, and oil. Mix with a wooden spoon until the dough begins to form. It should be pretty thick.
Stir in the white chocolate chips.
Drop by the tablespoonful into a star shaped whoopie pie pan (or just onto a baking sheet if you don't have the star shaped pan)
Bake for 8-10 minutes or until slightly golden brown.
Meanwhile, place sliced strawberries in a bowl and sprinkle with sugar. Gently mix and let sit until the strawberries become softer and start to produce a syrup.
Place a dollop of Cool Whip on top of a cooled cookie and then add some sweet strawberries on top. You can also add some blueberries if you want as well.