Meanwhile, use 1.5 ounces (half) of the red jello in 1/2 cup boiling water, stirring to combine and the other 1/2 cup boiling water with 1.5 ounces of the blue jello.
3 Ounces Jello, 1 Cup Water, 3 Ounces Jello
Once you remove the cake from the oven poke the cake all over with the end of a wooden spoon and pour red in 1/2 of the holes and blue in the other half. Try to not mix colors.
Place in the fridge for 30 minutes or up to overnight.
Top with cool whip and sprinkles and serve!
8 Ounces Whipped Topping, Sprinkles
Video
Notes
Store: Before topping the cake, wrap it tightly in plastic and refrigerate for up to 2 days. After adding Cool Whip, use a cake pan lid or airtight container to keep the topping fluffy and mess-free.
Freeze: To freeze this cake, wrap in plastic wrap and then foil and place in the freezer.