Experience the ultimate in easy baking with this vibrant Blackberry Cake, where a simple yellow cake mix meets the magic of raspberry gelatin for an incredibly moist and flavorful dessert. Bursting with bright summer berry goodness, thanks to a generous fold of frozen blackberries, this cake is so straightforward you simply can’t get it wrong!

Originally shared in September 2013, this beloved recipe has become a staple in countless homes, including mine. It’s more than just a cake; it’s a tradition, a delightful conversation starter, and a testament to how effortlessly extraordinary desserts can be created. Over the years, while the essence of this recipe has remained untouched, a few minor adjustments ensure it’s perfectly adapted for modern cake mix sizes, guaranteeing consistent results every single time.

Blackberry Cake: A Burst of Summer in Every Slice

Prepare to be amazed by this extraordinary Blackberry Cake. It’s more than just a recipe; it’s a family favorite, passed down through generations, and a true mission accomplished in making it “a family thing.” Its appeal lies not only in its irresistible flavor and texture but also in its striking appearance. I often joke that a more fitting name for this dessert would be “The Pinkest Cake You Have Ever Seen,” because, I assure you, these photos do not exaggerate its unbelievably bright, fun hue. The batter itself is a captivating shade of bubblegum pink, promising a treat that is as delightful to look at as it is to eat.
The Secret to Unrivaled Moisture and Color: Raspberry Gelatin
The secret weapon in this blackberry cake recipe is a box of raspberry gelatin. Far from being just an addition, the gelatin is the key to unlocking an unparalleled level of moisture, giving the cake an incredibly tender crumb that practically melts in your mouth. Beyond its texture-enhancing properties, it imbues the cake with its signature vibrant pink color and a subtle, fruity undertone that perfectly complements the blackberries. This ingenious addition transforms a simple yellow cake mix into a gourmet-tquality dessert, proving that sometimes, the simplest hacks yield the most impressive results.

This cake is deceptively simple, requiring only five core ingredients for the cake itself: a yellow cake mix, raspberry gelatin, eggs, oil, and frozen blackberries. This minimal ingredient list, combined with its simple “dump and stir” preparation method, makes it an ideal choice for busy bakers or anyone looking for a foolproof dessert. The resulting cake is not just moist and flavorful; it’s packed with the juicy brightness of blackberries, making it a perfect treat for any occasion. Whether you’re a devoted fan of blackberries, a cake enthusiast, a frosting connoisseur, or simply someone who appreciates the charming color pink, this cake is guaranteed to captivate your senses.
How to Make the Best Blackberry Cake

The batter for this blackberry cake is remarkably thick and lusciously delicious – don’t hesitate to sneak a fingerful! One of the most appealing aspects of this recipe is how quickly it comes together, typically in about five minutes. Even if you’re not the most confident egg cracker, it might only take an extra minute or so. It’s truly a dump-and-stir, pour-and-bake kind of recipe. The most challenging part, undoubtedly, is exercising patience while it cools enough to be frosted. But trust me, the wait is absolutely worth it!
Adjusting for Cake Mix Changes
It’s important to note that over the years, cake mix manufacturers have reduced their standard box sizes, from around 18 ounces down to 15 ounces. To accommodate this change and maintain the perfect moist consistency of this cake, I’ve slightly decreased the amount of oil called for in the original recipe. This small adjustment ensures that your cake remains perfectly balanced, moist, and delicious, despite the smaller cake mix quantity. Always check the box size of your yellow cake mix and adjust the oil proportionally if it differs significantly from the updated standard.


(The cake’s vibrant pink hue is so intense it almost appears red, reminiscent of the famous armadillo cake from Steel Magnolias – anyone else make that connection? I just adore that movie!)
Crafting the Perfect Cream Cheese Coconut Frosting
No blackberry cake would be complete without a luscious frosting, and this Coconut Cream Cheese Frosting takes it to another level. The combination of tangy cream cheese and rich butter creates a smooth, velvety base that perfectly balances the sweetness. The optional, but highly recommended, coconut extract adds a subtle, yet delightful, dimension that elevates the frosting from great to absolutely amazing. Start with just a quarter teaspoon, then adjust to your preference. This tiny addition of coconut extract works wonders, infusing a hint of tropical richness that complements the fruity cake beautifully. If you love this flavor profile, you’ll also appreciate it in my recipe for The Best Buttercream Frosting for Sugar Cookies.

This vibrant pink cake is a definite crowd-pleaser, ideal for summer gatherings, BBQs, or Memorial Day festivities. Its eye-catching color and irresistible flavor ensure it will be the star of any dessert table. As I was reshooting this cake recently, I admit I was a bit dubious that new photos would significantly improve upon the original from 2013, taken with a simple point-and-shoot camera. The cake’s intense pink can be challenging to capture perfectly, but its inherent charm always shines through. I’m certainly not complaining about this wonderfully “violent” pink; I absolutely adore it!

More Easy Cake Recipes You Will Love!
If you’re a fan of effortless yet delicious cakes, you’re in for a treat! Here are a few more of my favorite easy cake recipes that utilize similar concepts or are simply delightful for any occasion:
- Peach Cake with Brown Sugar Frosting: This cake follows the same fantastic principle as our blackberry cake – a boxed cake mix combined with gelatin. But this time, it’s infused with luscious peach flavors. The result is an incredibly moist, tender cake topped with a rich brown sugar frosting that’s simply divine. Perfect for peach season or when you crave a taste of summer!
- Pig Pickin’ Cake: A true Southern classic, this delightful yellow cake features mandarin oranges baked right into the batter, creating pockets of citrusy sweetness. It’s then layered with a light and airy pineapple whipped cream, making it an incredibly refreshing dessert that’s bright, zesty, and utterly delicious. It’s surprisingly easy to make and always a hit at potlucks.
- Patriotic Flag Cake with Blueberries and Cherries: Another variation on the gelatin-infused cake, this festive dessert uses cherry gelatin and a generous mix of fresh cherries. The vibrant red from the cherries, combined with blueberries arranged in a flag design, makes this cake visually stunning and perfect for patriotic holidays like Memorial Day or July 4th. It’s a fun and flavorful way to celebrate!
- The Best Chocolate Cake I’ve Ever Had: This bold claim still holds true to this day! If you’re a chocolate lover, this copycat recipe delivers an unbelievably rich, moist, and deeply chocolatey cake that will impress even the most discerning palates. It’s a classic for a reason and a must-try for any chocolate aficionado.
- The Best Homemade White Cake Recipe of Your Life!: Every baker needs a reliable, go-to white cake recipe, and this one is it. It’s light, fluffy, perfectly sweet, and serves as an excellent canvas for any frosting or filling. This classic recipe is foolproof and yields a beautiful, tender white cake every single time.
More Recipes Using Blackberries!
If you find yourself with an abundance of fresh or frozen blackberries, or simply can’t get enough of their sweet-tart flavor, explore these other fantastic recipes:
- Fresh Blackberry Glace Pie: Just like its popular strawberry counterpart, this glace pie is a fantastic way to showcase fresh blackberries. It’s cool, refreshing, and perfect for a warm summer day, with a shimmering, sweet glaze that enhances the berries’ natural flavor.
- Blackberry Pie: A true classic and my mom’s famous recipe, this traditional blackberry pie features a rich, bubbling berry filling encased in a perfectly flaky, golden crust. It’s comfort food at its best, ideal for family dinners or special occasions.
- Easy Blackberry Cobbler Recipe with Crunchy Oat Topping: This cobbler is not only incredibly easy to make but also features a delightful crunchy oat topping that adds wonderful texture to the juicy blackberry filling. Serve it warm with a scoop of vanilla ice cream for an unforgettable dessert.
- Chamomile Blackberry Ice Cream from Snixy Kitchen: For a unique and sophisticated treat, try this homemade ice cream. The delicate floral notes of chamomile beautifully complement the sweetness and slight tartness of blackberries, creating a truly exquisite frozen dessert.
- Blackberry Almond Rolls from Tutti Dolci: Imagine soft, fluffy rolls filled with a luscious blackberry mixture and hints of almond. These rolls are perfect for breakfast, brunch, or a sweet snack, offering a delightful combination of fruit and nutty flavors.
- Blackberry Upside Down Almond Skillet Cake from Five Heart Home: This rustic yet elegant skillet cake features a caramelized blackberry topping and a moist almond-infused cake base. Cooked in a cast-iron skillet, it’s a beautiful and delicious dessert that’s surprisingly simple to prepare.
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Blackberry Cake with Coconut Cream Cheese Frosting
15 mins
40 mins
1 hr
12 Servings

Print Recipe
Ingredients
- 1 (18-oz) box yellow cake mix
- 4 eggs
- 1 cup oil
- 1 (6-oz) box raspberry gelatin
- 1 (16-oz) bag frozen blackberries, unthawed (or use fresh)
- 1/2 cup butter, softened (for frosting)
- 1 (8-oz) package cream cheese, softened (for frosting)
- 4 cups powdered sugar (1 pound) (for frosting)
- 1-2 tablespoons milk (for frosting)
- 1 pinch salt, optional (for frosting)
- 1/4 tsp coconut extract, optional (for frosting)
Instructions
- Grease and flour a 9×13 inch cake pan. Set aside. In a large bowl, combine cake mix, eggs, oil, and raspberry gelatin. Beat on high speed with an electric mixer for about 2 minutes, until well combined and smooth.
- Gently fold in the frozen blackberries. The mixture will be quite thick and might resemble chewed bubblegum at this stage, but don’t worry – it transforms into a deliciously moist cake. Pour the batter evenly into the prepared 9×13-inch pan, using a sturdy spatula to ensure all the batter is transferred.
- Bake at 350°F (175°C) for approximately 40 minutes, or until a fork or toothpick inserted into the center comes out clean. Allow the cake to cool completely on a wire rack before frosting.
- While the cake cools, prepare the frosting. In a large bowl, beat the softened cream cheese and butter together until the mixture is smooth and creamy. Gradually add the powdered sugar, mixing until fully incorporated. Stir in 1-2 tablespoons of milk and a pinch of salt. If using, add 1/4 teaspoon of coconut extract and mix until the frosting is light and fluffy.
- Once the cake is completely cool, spread the cream cheese coconut frosting evenly over the top. For best results and to allow the frosting to set, chill the cake in the refrigerator for at least an hour before slicing and serving. Enjoy your incredibly vibrant and moist blackberry cake!
Nutrition
Calories: 411 kcal
Carbohydrates: 40 g
Protein: 2 g
Fat: 28 g
Saturated Fat: 7 g
Polyunsaturated Fat: 6 g
Monounsaturated Fat: 14 g
Trans Fat: 1 g
Cholesterol: 75 mg
Potassium: 25 mg
Fiber: 1 g
Sugar: 39 g
Vitamin A: 319 IU
Vitamin C: 1 mg
Calcium: 13 mg
Iron: 1 mg
Dessert
American
411
Blackberry, Blackberry Cake, Cake, Coconut, Cream Cheese, Cream Cheese Frosting
