Bake cake according to instructions on box, using the ingredients above. When baked, remove from the oven and set aside to cool.
With a mixer, whip together cream cheese, pudding mix, half and half and whipped topping.
Cut cake into cubes. Place just enough cubes in bottom of trifle dish or glass bowl to completely cover the bottom. Drizzle chocolate sauce over cake cubes.
Cover cake cubes and chocolate sauce with 1/2 of white chocolate cheesecake mixture. Top with mini chocolate chips.
Repeat layers until you reach the top of your dish or bowl. Finish your trifle with a layer of whipped topping. Sprinkle with a final layer of mini chocolate chips, white chocolate chips, chipped pecans and any crumbles of leftover cake.