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Unicorn Poke Cake, unicorn cake, rainbow cake, poke cake, birthday cake, easy birthday cake, birthday party ideas, fun dessert ideas

Unicorn Poke Cake

  • Author: Amber
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 12 servings 1x


Unicorn Poke Cake is a fun rainbow cake made from a box cake mix, vanilla pudding and a whipped cream frosting topped with colorful sprinkles that makes my inner unicorn completely delighted! 



Rainbow Cake

  • 1 box white cake mix
  • 3 eggs
  • 1/2 cup unsalted butter (softened)
  • 1 cup whole milk
  • food dye (pink, purple, yellow, blue)
  • non-stick cooking spray

Vanilla Pudding

  • 5.1 ounce vanilla pudding (instant)
  • 3 cups whole milk

Whipped Cream Frosting

  • 1 cup confectioners sugar
  • 3 cups heavy whipping cream
  • 1 Tablespoon unflavored gelatin
  • 6 Tablespoons hot water


  • rainbow sprinkles


Unicorn Poke Cake

  1. Heat oven to 350 degrees. 
  2. Use a hand or stand mixer to beat the softened butter until creamy. Add the remaining cake ingredients (milk, cake mix and eggs) and lightly beat until you have a nice, consistent batter. 
  3. Place the batter into four bowls (or a bowl for each color you are using). Add food dye to each bowl and stir until color is consistent. 
  4. Spray the 13 x 9 inch pan with non-stick spray and spoon the batters into it switching colors between each spoonful. Take the spoon and smooth out the top when finished. 
  5. Bake for 28- 30 minutes. 
  6. Remove from oven and let cool. 
  7. Once cooled, use the bottom of a wooden spoon to gently poke holes throughout the cake. 
  8. Make your pudding. Add a box of pudding powder to cold milk and stir until it begin to set up. Immediately pour the pudding over cake. Smooth out the top. 
  9. Set the cake in fridge for at least 30 minutes to chill. 

Whipped Cream Frosting

  1. As the cake is chilling, place the beaters and a mixing bowl into freezer. 
  2. Once the beaters and bowl are chilled, assemble the hand or stand mixer and start the frosting. Beat the heavy whipping cream and confectioners sugar for 3-5 minutes. You want a stiff peak to form where when you lift the beaters, the frosting will stand straight up with a slight curl. 
  3. In a small bowl, add 6 Tablespoons hot water and 1 Tablespoon unflavored gelatin. Mix together until dissolved. Add the mixture to the whipped cream frosting and beat again. 

Finishing Touch

  1. Frost the cake with the whipped cream frosting and smooth the top. 
  2. Add sprinkles! Refrigerate until serving. 
  • Category: Dessert