01 -
Preheat oven to 350°F (175°C) and position the rack in the middle. Spray a small rimmed baking sheet with cooking spray.
02 -
In a large bowl, mix together the cake mix, water, oil, and eggs until smooth. Spread the batter evenly into the baking sheet.
03 -
Bake for 12-15 minutes or until a toothpick inserted into the center comes out clean. Let the cake cool completely on a wire rack.
04 -
For the pudding: In a medium bowl, whisk together the pudding mix and milk until smooth. Add orange food coloring if desired, and mix well. Refrigerate for 10-15 minutes until set.
05 -
Assemble: Remove the pudding and Cool Whip from the fridge. Fit two pastry bags with large round tips, filling one with pudding and the other with Cool Whip.
06 -
Use the rim of the trifle dish to cut out a circle from the cooled cake. Place the cake circle in the bottom of the trifle dish.
07 -
Pipe a layer of pudding on top of the cake, followed by a layer of Cool Whip. Repeat if needed for multiple layers.
08 -
Decorate the top with sprinkles, chocolate eyeballs, and gummy body parts as desired.
09 -
Serve immediately or store in the refrigerator for up to 1 day before serving.