Pre-heat oven to 350℉
Take Cool Whip out of the freezer and let it begin to thaw
In a mixing bowl, combine the spice cake powder, water, eggs, and pumpkin purée with an electric mixer until smooth
Prepare a baking dish with non-stick spray
Add the cake batter to the baking dish and bake for 28-35 minutes or until you stick a toothpick in the center and it comes out clean. Check the back of the spice cake box for an idea of baking times for your size dish. I used a 9×13 glass dish and it takes about 30 minutes.
Let the cake cool for 5-10 minutes
Using the handle of a wooden spoon, poke several holes in the cake
Remove the lid and peel off the foil lining from the frosting container. Microwave for 30 seconds.
Add the pumpkin spice seasoning to the melted frosting and stir until combined
Microwave the frosting for another 10 seconds
Pour the melted frosting over the cake
Let the cake cool for at least 20 minutes
Using a spatula, frost the top of the cake with the thawed Cool Whip
Add chocolate chips and caramel chips on top
Drizzle with caramel dessert topping