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Patriotic poke cake squares with red white and blue layers topped with white frosting and star sprinkles on a serving plate

Patriotic Poke Cake Recipe Red White Blue Dessert Cake - A Fun, Festive Treat

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Prep Time 20 minutes
Cook Time 30 minutes
Chill Time 3 hours
Total Time 3 hours 50 minutes
Course Dessert
Cuisine American
Servings 12 Squares

Ingredients
  

  • 1 box white cake mix (plus ingredients listed on the box, usually eggs, oil, and water)
  • 1 cup cold milk (if your cake mix calls for milk; otherwise follow your box directions)
  • 1 (3 oz) box strawberry or cherry gelatin (red)
  • 1 (3 oz) box blue raspberry or berry blue gelatin (blue)
  • 2 cups boiling water (1 cup for each gelatin flavor)
  • 1 cup cold water (1/2 cup for each gelatin flavor)
  • 1 (8–12 oz) tub whipped topping (thawed)
  • Red, white, and blue sprinkles
  • Optional add-ins: Fresh berries (strawberries, blueberries), vanilla extract, or a squeeze of lemon juice for brightness
  • Nonstick cooking spray

Instructions
 

  • Preheat and prepare the pan. Heat your oven according to your cake mix instructions. Grease a 9x13-inch baking pan with nonstick spray.
  • Mix the cake batter. Follow the directions on your cake mix box. For a brighter “white” look, use egg whites if given the option. Stir just until smooth—overmixing can make the cake dense.
  • Bake and cool slightly. Pour the batter into the pan and bake as directed. The cake is done when a toothpick in the center comes out clean. Let it cool for about 20–30 minutes. It should still be warm but not hot.
  • Poke the holes. Using the handle of a wooden spoon or a thick straw, poke holes all over the cake, spacing them about 1 inch apart. Go about two-thirds of the way down, not all the way to the bottom to avoid sogginess.
  • Prepare the red gelatin. In a bowl, whisk 1 cup boiling water into the red gelatin until fully dissolved (about 2 minutes). Stir in 1/2 cup cold water.
  • Pour the red gelatin. Carefully spoon or pour the red mixture over one half of the cake, aiming for the holes. Work slowly so it soaks in instead of flooding the top.
  • Prepare the blue gelatin. Repeat with the blue gelatin: dissolve with 1 cup boiling water, then stir in 1/2 cup cold water.
  • Pour the blue gelatin. Spoon or pour the blue mixture over the other half of the cake, again aiming for the holes. If they overlap a bit in the middle, that’s fine and looks cool when sliced.
  • Chill to set. Cover the cake and refrigerate at least 3–4 hours, or overnight. This helps the gelatin set and the flavors meld.
  • Frost with whipped topping. Once set, spread whipped topping evenly over the cake. For a light vanilla note, fold 1 teaspoon vanilla extract into the topping beforehand.
  • Add festive flair. Sprinkle generously with red, white, and blue sprinkles. For extra freshness, dot the top with sliced strawberries and whole blueberries just before serving.
  • Slice and serve. Cut into squares with a sharp knife. Wipe the blade between cuts for clean, colorful slices.