The first thing you want to do is preheat the oven and mix up the boxed white cake mix as directed on the box. I used a 9x13 pan and baked according to the box.
Once the cake is done, remove and let it cool for about 10 minutes. Then use a wooden skewer and poke holes all over the cake. It will tear up the top of the cake slightly but that is okay.
Now you will take 1 cup boiling water per Jello box. Mix the 3-ounce packet of Jello with the hot water. Stir till the granules are melted. Then pour in 1/8 cup cold water.
Repeat till you do all 4 colors of Jello. You can do as many colors as you want. There will be a leftover Jello mixture.
Carefully pour the Jello liquid onto portions of the cake. This will create a rainbow poke cake look.
Cover and refrigerate the cake 3-4 hours.
Once cooled top with a tub of whipped cream. Top with sprinkles if you want.
Slice and serve up this colorful poke cake.
There will be some leftover Jello mixture for each one. You can refrigerate to set up, or toss it. I did 4 different colors, but use as many as you want. You can do a straight line of colors or random spots of color. It is up to you. This poke cake needs to be refrigerated once it is done. Cover well and store for 4-5 days. You can freeze the cake for 3-4 months in the freezer as well if you would like. Use any flavors of Jello as you would like. I did cherry, lime, blue raspberry and lime Jello.