01 -
Grab a 23x33 cm dish, spray it so nothing sticks, and put it aside. Crank your oven up to whatever the cake box says.
02 -
Just follow the directions on the cake mix—add in water, oil, and eggs like it says.
03 -
Split your batter into three bowls. Leave one as is, color one with red, and the last with blue. Mix it up so the colors really show.
04 -
Start dropping blobs of colored batter around the pan so they're all mixed up, but not totally touching. Once it's all in, tap the pan a few times to even it out. Swirl a bit with a toothpick for that marble look—but don't overdo it.
05 -
Pop the pan in the oven. Bake as long as it says on the box. Once done, cool for 10 minutes right on your counter.
06 -
Grab the wooden spoon and poke holes all over the cake. Let it cool all the way after that.
07 -
Stir pudding mixes and milk together until it's smooth and starting to thicken up. Pour that over the cooled cake, gently press so it gets in the holes, then smooth the rest on top. Chill the whole thing until it's set.
08 -
In a chilled bowl, beat the cream with vanilla until it's got soft peaks. Shake in the powdered sugar and whip until nice and thick. Slather that on top of the chilled cake.
09 -
Add sprinkles on top and dive in! Keep whatever’s left in the fridge.