Preheat oven to 350 degrees F (175 degrees C). Grease two 9 inch round cake pans.
Make cake per directions except substitute the 1 1/2 cups of strawberries for the water and add 1 extra egg, (if cake mix calls for 2 eggs add 3), and 8 ounces of the cream cheese at room temperature. Beat well and pour into the prepared pans.
Bake at 350 degrees F (175 degrees C) for about 20 to 25 minutes or until golden brown. A toothpick inserted in the center will not come out clean when this cake is done since it is so moist. Let cake cool fully before frosting.
To Make Frosting: Heat the heavy cream until just beginning to boil. Pour it over the white chocolate (chopped) and the remaining 4 ounces cream cheese. Mix well and let cool. Once cool fold into the whipped topping. Use to frost cooled cake and garnish with sliced fresh strawberries.
