01 -
Preheat oven according to cake mix package instructions. Grease a 23 × 33 cm baking dish with baking spray and set aside.
02 -
Prepare cake batter as per manufacturer’s directions. Divide the batter into three equal portions. Leave one portion uncolored, tint one with red food coloring, and the third with blue food coloring. Mix until colors are evenly distributed.
03 -
Using a spoon, alternate dropping small amounts of each colored batter in the prepared dish to create a patterned effect. Layer remaining batter as needed. Gently tap dish on the counter to level the surface. Lightly swirl with a toothpick for a marbled appearance; avoid overmixing.
04 -
Bake according to the cake mix package directions. Remove from oven and cool in the dish for 10 minutes at room temperature.
05 -
Using the handle of a wooden spoon, poke holes evenly across the surface of the cake. Let cake cool completely before proceeding.
06 -
In a bowl, whisk together instant cheesecake pudding mix and milk until dissolved. Before pudding thickens, pour evenly over the cooled cake, ensuring holes are filled. Spread excess pudding on top; refrigerate until set.
07 -
In a chilled bowl, whip heavy cream and vanilla extract until soft peaks form. Add powdered sugar and whip until stiff peaks form. Spread whipped cream over the pudding layer of the cake.
08 -
Garnish with decorative sprinkles before serving. Store any leftovers in the refrigerator.