This Red, White and Blue Poke Cake is an easy patriotic dessert made with a cake mix, colorful gelatin, and a fluffy whipped topping. It is perfect for the 4th of July, Memorial Day, summer parties, and any festive red, white, and blue celebration.
Prepare and bake the cake according to the package directions in a 9x13-inch pan. Let the cake cool completely.
Poke holes all over the cooled cake. Dissolve each gelatin flavor in boiling water, stirring until fully dissolved.
Carefully fill the holes with the red and blue gelatin, alternating colors and leaving space for each flavor. Do not pour the gelatin over the entire top of the cake.
Cover tightly and refrigerate for at least 4 hours, or until the gelatin is fully set.
To make the frosting, beat the Dream Whip with cold milk until thick and fluffy. In a separate bowl, beat the pudding mix with cold milk until softly set. Fold the two mixtures together until smooth and fully combined. Refrigerate until ready to use.
Once the cake is chilled and set, spread a thin layer of frosting over the top, then add the remaining frosting and spread evenly to the edges. Top with sprinkles, if desired.
Cover and refrigerate until ready to serve.
Cut the cake into squares before serving.
Recipe Expert Tips
The baking pan: Note I used a glass baking pan. I decreased the baking time because glass pans heat up hotter than metal pans. I baked the cake for 30 minutes to prevent over browning and to keep the cake from drying out.
Cooling: Do not refrigerate to shorten the cooling time after baking. The top of the cake will get moist and sticky. It will make poking the holes more difficult.
For the gelatin colors: If you want to get the same exact red, white and blue colored Poke Cake you will need to use the exact gelatin flavors that I used. I include the flavors I used so you have the option of duplicating the recipe exactly as I have made it.
Filling the poke holes: Do not pour the gelatin over the entire top of the cake and expect to see tunnels of color separated by white areas as I have seen recommended in a few recipes. You will end up with big blobs of color it will look like a big mess.
Dream Whip Substitution: In a pinch you can use and equal amount of Cool Whip instead of Dream Whip. It will have a thicker consistency.
Make the frosting ahead: You should chill the frosting before frosting the finished cake. The pudding and whipped topping need a short cooling time to thicken.