Looking for an easy red, white, and blue dessert to impress your guests this 4th of July? This Red, White, and Blue Poke Cake delivers festive color, great flavor, and minimal effort. Made from a white cake mix, bright red and blue gelatin, a fluffy whipped topping, and festive sprinkles, this patriotic poke cake is simple to assemble and fun to serve.
*Disclaimer: This post is not sponsored and is not affiliated with Jell‑O or the Kraft Heinz brand.
For more easy 4th of July ideas, try other red, white, and blue treats like layered Jello, fruit pizza, cheesecake-stuffed strawberries, or patriotic trifles.
Why You’ll Love This 4th of July Cake
This patriotic poke cake is perfect for backyard barbecues, pool parties, and fireworks nights. It’s colorful, quick to prepare, and refreshingly cool—ideal for summer gatherings. The Jello sinks into the cake for a pretty striped look, the whipped topping keeps it light, and kids and adults both love the bright finish.
- Festive and colorful – Red and blue gelatin creates eye-catching color throughout the cake.
- Quick and easy – Uses a boxed white cake mix and instant gelatin for simple prep.
- Cool and refreshing – Chilled and topped with whipped topping, it’s great for hot days.
- Kid-approved – Sweet, soft, and vibrant, kids will enjoy it.
- Make-ahead friendly – Prepare a day or two in advance and refrigerate until serving.
Ingredients You Will Need
NOTE: Full ingredient amounts and detailed instructions are in the recipe card below.
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To make this red, white, and blue poke cake you’ll need:
- White cake mix – or a homemade white cake if you prefer.
- Eggs – or egg whites for a whiter crumb.
- Oil – neutral oil like canola or vegetable.
- Water – for the cake batter and gelatin.
- Red gelatin – cherry or strawberry flavor works well.
- Blue gelatin – berry blue or blue raspberry.
- Whipped topping – Cool Whip or stabilized whipped cream.
- Patriotic sprinkles – for garnish, or swap with fresh strawberries and blueberries.
How to Make Red, White, and Blue Poke Cake
Step 1: Bake the Cake
Prepare the white cake mix according to the box directions. Pour the batter into a greased 9×13-inch pan and bake per package instructions (typically 350°F for 25–35 minutes). Let the cake cool for about 15 minutes; it should remain warm for the next step.
Step 2: Poke the Cake
Use the handle end of a wooden spoon to poke holes in the cake in rows about 1 inch apart.
Step 3: Add the Jello
- Stir the red gelatin with 1/2 cup boiling water until dissolved, then add 1/2 cup cold water. Spoon the red gelatin into half the holes.
- Stir the blue gelatin with 1/2 cup boiling water until dissolved, then add 1/2 cup cold water. Spoon the blue gelatin into the remaining holes, taking care not to mix the colors.
Step 4: Chill
Cover the cake and refrigerate for at least 4 hours or overnight so the gelatin fully sets into the cake.
Step 5: Top with Whipped Topping and Sprinkles
Just before serving, spread the whipped topping evenly over the cake and sprinkle with red, white, and blue sprinkles. Cut into 15 pieces (3 by 5) and use a spatula to serve.
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Recipe Notes
Tips for the Perfect Patriotic Poke Cake
- Poke the cake while it’s warm. A warm cake holds together better and makes it easier to create clean holes.
- Let the gelatin cool slightly. After adding the cold water, let the gelatin sit a minute to thicken so it pours more precisely and won’t spread as much.
- Tip for neat color placement: Use a measuring spoon to drop about 1/2 tablespoon of gelatin into each hole to keep colors separate.
- Fruit alternative: Skip the sprinkles and arrange fresh strawberries and blueberries on top in a flag pattern for a fruit-forward decoration.
Make-Ahead and Storage Instructions
- Make ahead: Assemble the poke cake up to 2 days in advance, cover it tightly, and refrigerate. Add whipped topping and sprinkles only when you’re ready to serve.
- Storage: Keep the cake tightly covered in the refrigerator for up to 3 days. You can freeze the cake (without sprinkles) for up to 3 months; thaw in the fridge before serving.
Make It a Red, White, and Blue Tradition
This poke cake is great for more than just the 4th of July — serve it for Memorial Day, Labor Day, or any celebration where patriotic colors are welcome. Simple, sweet, and striking, it’s an easy dessert to add to your summer rotation.
FAQs
Yes. A homemade white or light-colored cake works well—just be sure the crumb is light enough for the gelatin colors to show through.
Yes. Sugar-free gelatin will set the same way and reduces the dessert’s sugar content.
You can use homemade whipped cream, but store-bought whipped topping tends to hold up longer. If you prefer homemade, stabilized whipped cream (with a small amount of gelatin) prevents weeping.
Red White and Blue Poke Cake
Ingredients
Cake
- 15.25 oz box white cake mix
- 1 cup water
- 3 egg whites
- ½ cup oil
Filling and Topping
- 3 oz red gelatin (powder)
- 3 oz blue gelatin (powder)
- 2 cups water, divided
- 8 oz frozen whipped topping (thawed)
- red, white, and blue sprinkle mix, for decorating
Equipment
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9×13-inch pan
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wooden spoon
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measuring cups
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mixing bowl
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spatula
Instructions
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Prepare cake mix according to the box. Pour into a greased 9×13-inch pan and bake as directed. Cool for 15 minutes while warm, then poke holes about 1 inch apart with the end of a wooden spoon.
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Dissolve red gelatin in ½ cup boiling water, add ½ cup cold water, and spoon into half the holes.
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Dissolve blue gelatin in ½ cup boiling water, add ½ cup cold water, and spoon into remaining holes. Cover and refrigerate for 4 hours or overnight.
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Before serving, spread whipped topping evenly over the cake and garnish with sprinkles. Slice into 15 pieces and serve.
Notes
- To store: Keep tightly covered in the fridge up to 3 days. Freeze (without sprinkles) up to 3 months and thaw in the refrigerator.
Nutrition
Disclaimer: Nutritional values are estimates calculated with a third‑party tool.