The Ultimate Strawberry Sheet Cake with Fresh Strawberry Buttercream Frosting
Prepare to fall in love with this incredibly easy and unbelievably delicious Strawberry Sheet Cake, complete with a luscious fresh Strawberry Buttercream Frosting. This recipe is an absolute game-changer for anyone craving a dessert that tastes like a slice of pure summer. What makes it truly special is its vibrant, natural strawberry flavor, infused into both the cake and the frosting, making it a standout treat for any occasion.
This delightful cake manages to deliver an intense strawberry experience while being surprisingly simple to prepare. The secret lies in a clever combination: a convenient box of white cake mix gets a gourmet upgrade with the addition of fresh strawberry puree and a touch of strawberry gelatin, creating a cake that’s not only moist and tender but also boasts a beautiful pink hue and an authentic berry taste.
Experience the Richness of Fresh Strawberry Buttercream
No strawberry cake is complete without an exceptional frosting, and this recipe delivers. Our creamy buttercream is a star in its own right, crafted with fresh strawberry puree that’s carefully reduced to intensify its flavor and achieve the perfect consistency. This concentrated puree ensures that every bite of frosting is packed with the sweet and tangy essence of ripe strawberries, perfectly complementing the cake’s vibrant profile.
Living next to a strawberry farm is a constant source of inspiration, and it means I have an endless supply of nature’s candy to experiment with! This proximity ensures that my kitchen is always buzzing with new ideas for fresh strawberry desserts. While classics like Strawberry Shortcake, indulgent Strawberry Lasagna, and crispy Strawberry Fritters hold a special place in my heart, this Strawberry Sheet Cake has quickly ascended to the top tier of my all-time favorite berry creations.
Why This Strawberry Sheet Cake Will Be Your New Favorite
This Strawberry Sheet Cake isn’t just another dessert; it’s an experience. Each bite reveals an unbelievably light, tender, and moist texture that melts in your mouth, absolutely bursting with the pure, unadulterated flavor of strawberries. It’s the kind of cake that makes you close your eyes and savor the moment.
Beyond its exquisite taste and texture, one of the most practical advantages of a sheet cake is its ease of serving. It effortlessly cuts into neat squares, making it the perfect candidate for potlucks, picnics, family gatherings, or any event where you need to feed a crowd. I particularly enjoy decorating each slice with a fresh strawberry half – it adds a delightful visual appeal, transforming it into a truly pretty spring or summer dessert that’s as charming to look at as it is to eat.
Tips for Perfect Strawberry Flavor
To achieve the most authentic and intense strawberry flavor, using fresh, ripe strawberries is ideal. Look for berries that are vibrant in color, firm, and fragrant. Their natural sweetness and slight tartness will shine through beautifully in both the cake and the frosting. However, if fresh strawberries are out of season or not readily available, don’t fret!
PRO TIP: Using Frozen Strawberries
Frozen strawberries can be used as an excellent alternative to fresh ones. To use them, simply thaw them in a colander. This allows any excess liquid to drain away, preventing your cake batter or frosting from becoming too watery. Once thawed and drained, they can be pureed just like fresh berries, delivering wonderful strawberry essence.
Simple Steps to a Stunning Strawberry Sheet Cake
Creating this magnificent Strawberry Sheet Cake is simpler than you might imagine, thanks to a few clever shortcuts and straightforward instructions. Even if you’re a novice baker, you’ll find this recipe incredibly approachable, yielding impressive results every time.
The Cake Base: A Box Mix Transformation
Starting with a white cake mix is the ultimate hack for saving time without compromising on quality. We elevate this humble mix by blending in fresh strawberry puree and a packet of dry strawberry gelatin. The puree ensures natural fruit flavor and moisture, while the gelatin intensifies the berry taste and contributes to the cake’s lovely pink hue, making it visually as appealing as it is delicious. This combination transforms a basic mix into a moist, tender, and intensely flavored strawberry cake.
The Frosting: Concentrated Strawberry Bliss
The star of the show, the fresh strawberry buttercream, requires a small but crucial step: reducing the strawberry puree. By simmering the pureed strawberries until thickened, you concentrate their flavor and create a vibrant, intense strawberry syrup. This reduced puree is then whipped into softened butter and confectioners’ sugar, along with a hint of vanilla extract, to create a smooth, creamy, and undeniably fruity frosting that’s impossible to resist. This reduction process is key to preventing a watery frosting and ensuring that rich, berry taste.
Serving and Storage Suggestions
This Strawberry Sheet Cake is designed for sharing. Once frosted, it’s perfect for slicing and serving directly from the pan. For an extra touch of elegance, consider garnishing each square with a fresh strawberry half, a sprig of mint, or a dusting of powdered sugar. Its vibrant color and fresh flavor make it an ideal dessert for spring garden parties, summer barbecues, birthday celebrations, or simply as a delightful treat to brighten any day.
How to Store Your Strawberry Sheet Cake
To keep your Strawberry Sheet Cake fresh and moist, store it covered in an airtight container at room temperature for up to 2-3 days. If your kitchen is particularly warm, or if you prefer a chilled cake, it can be stored in the refrigerator for up to 5 days. Just be sure to bring it closer to room temperature before serving for the best flavor and texture, especially for the buttercream.
Strawberry Sheet Cake Recipe
By Christin Mahrlig
15
30
45
16
Print Recipe
Equipment
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Blender
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Hand-held electric mixer
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9×13-inch baking pan
Ingredients
For the Cake:
- 2 heaping cups sliced fresh strawberries
- 1 (16.5-ounce) box white cake mix
- 3 large eggs
- 3/4 cup vegetable oil
- 1 (3-ounce) package strawberry gelatin
For the Strawberry Frosting:
- 2 cups sliced strawberries
- 1 cup unsalted butter, softened
- 3 cups confectioners’ sugar
- 1 teaspoon vanilla extract
Instructions
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Lightly spray a 9×13-inch baking pan with cooking spray and preheat your oven to 350 degrees F (175 degrees C).
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Place 2 heaping cups of sliced strawberries into a blender or food processor. Process until the strawberries are very finely chopped or pureed. Measure out exactly 1 cup of this strawberry puree for the cake batter.
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In a large mixing bowl, combine the white cake mix, 3 large eggs, and 3/4 cup vegetable oil. Using a hand mixer or stand mixer, beat the ingredients until well combined and smooth, scraping down the sides of the bowl as needed.
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Add the measured 1 cup of strawberry puree and the dry strawberry gelatin powder to the cake batter. Mix again until the puree and gelatin are fully incorporated and the batter is a uniform pink color.
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Pour the prepared cake batter evenly into the greased 9×13-inch pan. Bake for 30 to 35 minutes, or until a wooden pick inserted into the center of the cake comes out clean. Once baked, remove the cake from the oven and let it cool completely on a wire rack before frosting.
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**To Make the Strawberry Frosting:** Process the remaining 2 cups of sliced strawberries (or any leftover puree from the cake batter if you have it) in a blender or food processor until perfectly smooth.
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Transfer the strawberry puree to a small saucepan. Bring it to a gentle simmer over medium heat. Cook, stirring occasionally, until the puree has thickened significantly and reduced to approximately 1/3 cup. This step concentrates the strawberry flavor. Remove from heat and let the reduced puree cool completely to room temperature. This is crucial for the frosting consistency.
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In a clean mixing bowl, use an electric mixer to beat the softened butter until it is light and creamy, about 2-3 minutes.
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Gradually beat in 1 cup of the confectioners’ sugar until fully incorporated. Then, add half of the cooled, reduced strawberry puree and beat until combined.
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Stir in the 1 teaspoon of vanilla extract.
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Beat in another cup of confectioners’ sugar, followed by the remaining half of the reduced strawberry puree. Continue to beat until smooth.
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Finally, beat in the last cup of confectioners’ sugar until the frosting is light, fluffy, and spreadable. Spread the delicious strawberry buttercream evenly over the completely cooled cake. Garnish with fresh strawberries if desired, and enjoy!
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
This recipe was originally published on May 15, 2017, and has since delighted countless dessert lovers with its irresistible charm.
Explore More Irresistible Strawberry Desserts
If you’ve fallen in love with the vibrant flavor of strawberries in this sheet cake, you’ll be thrilled to discover more of our delightful strawberry recipes:
- Easy Strawberry Poke Cake: A fun and flavorful cake with a delicious strawberry glaze seeping into every crevice.
- Strawberry Twinkie Cake: An imaginative twist on a classic, featuring creamy Twinkies layered with fresh strawberries.
- No-Bake Strawberry Lasagna: A refreshing, layered dessert perfect for warm weather, requiring no oven time.
- Strawberry Custard Bars: A delightful treat with a rich, creamy custard and fresh berry topping on a crisp crust.
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