01 -
Preheat the oven to 350°F (175°C) and lightly spray a 13 x 9-inch sheet pan or prepare three 8-inch round pans for a tiered cake.
02 -
In a large mixing bowl, combine the cake mix, mandarin oranges with juice, sugar, oil, and eggs. Beat for approximately 3 minutes using an electric mixer until smooth.
03 -
Pour the batter into the prepared pan and bake according to the cake mix package's instructions for your pan size, usually 35 minutes. Remove and allow to cool completely.
04 -
In a medium-sized bowl, mix the drained crushed pineapple with the instant pudding mix until evenly combined.
05 -
Gently fold the whipped topping into the pineapple mixture until fully blended.
06 -
Spread the frosting evenly over the cooled cake.
07 -
Garnish with orange peel and pineapple, if desired.