Red stripes, white frosting, a little blueberry rectangle in the corner. Cute? INCREDIBLY cute. The secret is that this whole patriotic showstopper is basically a boxed cake mix, some strawberry Jell-O poured into a million poked holes, and whipped cream cheese stuff.
The kind of dessert that gets you invited to things.
How to Poke the Holes (and Why It Matters)
Use a FORK to poke holes all over the COOLED cake, spacing them about 1/2-inch apart. This step is ABSOLUTELY essential.
Those holes are flavor highways. They let the gelatin seep deep into the cake, creating moist, strawberry-infused bites in every slice. Without them, you just have a cake with topping.
Tips for a Clean Flag Design
Clean flag design lives and dies by precision and chill time. Skip these tricks and your stripes will look like a toddler’s art project!?!
- Chill the cake HARD before decorating (cold frosting grips berries like glue)
- Mark stripe positions with toothpicks first…. eyeballing is where things go sideways
- Pat strawberries DRY with paper towels before placing (juicy berries bleed pink into your white rows)
- Use tweezers for blueberries in the corner block (your fingers are too bulky and clumsy)
- Slice strawberries the SAME thickness so rows sit flat and uniform
Make-Ahead and Storage Tips
MAKE THIS EASY POKER CAKE THE DAY BEFORE. SERIOUSLY. This cake actually improves when made ahead, as the flavors meld beautifully overnight.
- MAKE AHEAD: Complete Steps 1 & 2 (bake and soak with gelatin) up to 24 hours in advance. Cover and refrigerate. Do NOT add the cream cheese topping or fruit until the day you plan to serve it.
- STORAGE: Once fully assembled, store the cake COVERED in the refrigerator for up to 3 days. The berries may soften slightly after day one.
- DO NOT FREEZE. The gelatin and cream cheese topping will not thaw well, leading to a watery, compromised texture.
Your only job on serving day? Spread the topping and arrange that flag. Done!
How to Get Neat, Clean Slices
CHILL UNTIL COMPLETELY COLD. Refrigerate for at least 2 hours after assembling, but overnight is even better for the cleanest slices. The topping needs to set firmly.
USE A SHARP, THIN KNIFE. Wipe the blade with a damp cloth between each cut to keep the layers distinct and prevent smearing. This step is non-negotiable for a pretty flag.
CUT WITH CONFIDENCE. Press straight down without sawing, and let the knife do the work. Clean slices guaranteed.
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
- Calories: 2700-3100
- Protein: 20-28 g
- Fat: 95-120 g
- Carbohydrates: 420-480 g
Ingredients
For the cake:
- 15 oz white cake mix
- 3 eggs
- 1/2 cup oil
- 1 cup water
For the gelatin soak:
- 3 oz strawberry gelatin
- 1 cup boiling water
- 1/2 cup cold water
For the topping and fruit:
- 8 oz cream cheese (softened to 70°F)
- 1/2 cup sugar
- 1 teaspoon vanilla extract
- 1 pinch salt
- 8 oz whipped topping
- 1 cup blueberries
- 1 lb strawberries (hulled and sliced 1/4-inch thick)
Step 1: Bake the White Cake
- 15 oz white cake mix
- 3 eggs
- 1/2 cup oil
- 1 cup water
Preheat your oven to 350°F.
In a large mixing bowl, combine the white cake mix, eggs, oil, and water, stirring until just combined and smooth—don’t overmix.
Pour the batter into a 9×13 inch baking pan and bake for 28-30 minutes until a toothpick inserted in the center comes out clean.
Remove from the oven and let cool to room temperature, about 30 minutes.
Step 2: Infuse with Strawberry Gelatin
- 3 oz strawberry gelatin
- 1 cup boiling water
- 1/2 cup cold water
Once the cake is cooled, use a fork to poke holes all over the surface of the cake, creating pockets for the gelatin to seep into.
In a bowl, dissolve the strawberry gelatin in 1 cup of boiling water, stirring for about 2 minutes until completely dissolved.
Add the 1/2 cup of cold water to cool the mixture slightly, then pour it slowly and evenly over the entire cake surface, allowing it to seep into the poked holes.
Refrigerate for at least 4 hours or overnight until the gelatin is fully set.
Step 3: Whip the Creamy Topping
- 8 oz cream cheese
- 1/2 cup sugar
- 1 teaspoon vanilla extract
- 1 pinch salt
- 8 oz whipped topping
Remove the softened cream cheese from the refrigerator and place it in a mixing bowl.
Beat the cream cheese with the sugar until smooth and creamy, about 2 minutes.
Gently fold in the whipped topping with a spatula until fully combined and fluffy.
I like to fold by hand rather than using an electric mixer here—it keeps the whipped topping airy and prevents deflating it.
Step 4: Decorate with Berry Stripes
- cream cheese topping from Step 3
- 1 cup blueberries
- 1 lb strawberries
Spread the cream cheese mixture evenly over the chilled cake from Step 2, covering the entire surface.
Now arrange the berries to create a flag pattern: place the blueberries in the upper left corner in a rectangular block (representing the union of the flag), and arrange the strawberry slices in horizontal stripes across the remaining cake, alternating between strawberry rows and white frosting rows for a classic American flag design.
I’ve found that chilling the berries for 30 minutes before arranging makes them easier to handle and less likely to slide around on the frosting.
Step 5: Refrigerate Before Serving
Refrigerate the completed cake for at least 2 hours before serving to allow the flavors to meld and the frosting to fully set.
This resting time ensures clean slices and the best texture.
Serve cold and enjoy!
Quick Flag Poke Cake
Ingredients
Method
- Preheat your oven to 350°F. In a large mixing bowl, combine the white cake mix, eggs, oil, and water, stirring until just combined and smooth—don't overmix. Pour the batter into a 9x13 inch baking pan and bake for 28-30 minutes until a toothpick inserted in the center comes out clean. Remove from the oven and let cool to room temperature, about 30 minutes.
- Once the cake is cooled, use a fork to poke holes all over the surface of the cake, creating pockets for the gelatin to seep into. In a bowl, dissolve the strawberry gelatin in 1 cup of boiling water, stirring for about 2 minutes until completely dissolved. Add the 1/2 cup of cold water to cool the mixture slightly, then pour it slowly and evenly over the entire cake surface, allowing it to seep into the poked holes. Refrigerate for at least 4 hours or overnight until the gelatin is fully set.
- Remove the softened cream cheese from the refrigerator and place it in a mixing bowl. Beat the cream cheese with the sugar until smooth and creamy, about 2 minutes. Gently fold in the whipped topping with a spatula until fully combined and fluffy. I like to fold by hand rather than using an electric mixer here—it keeps the whipped topping airy and prevents deflating it.
- Spread the cream cheese mixture evenly over the chilled cake from Step 2, covering the entire surface. Now arrange the berries to create a flag pattern: place the blueberries in the upper left corner in a rectangular block (representing the union of the flag), and arrange the strawberry slices in horizontal stripes across the remaining cake, alternating between strawberry rows and white frosting rows for a classic American flag design. I've found that chilling the berries for 30 minutes before arranging makes them easier to handle and less likely to slide around on the frosting.
- Refrigerate the completed cake for at least 2 hours before serving to allow the flavors to meld and the frosting to fully set. This resting time ensures clean slices and the best texture. Serve cold and enjoy!