Strawberry Funfetti Cake With Buttercream

The first time I made this cake, my kitchen looked like a confetti explosion had occurred mid-bake. Rainbow sprinkles were scattered across every surface, and my apron was dusted with powdered sugar and flour. But when I pulled those layers from the oven, the smell of butter and vanilla mingling with fresh strawberries made every bit of the mess worth it. Now it's my go-to celebration cake, because nothing says happy quite like flecks of rainbow in every bite.

My neighbor's daughter turned seven last spring, and her only birthday wish was a cake that tasted like strawberries and looked like a party. We baked this together on a rainy Saturday afternoon, her tiny hands carefully folding sprinkles into the batter while I explained that patience was the secret ingredient. When she saw the finished cake, she actually jumped up and down, which is exactly the energy this dessert deserves.

Ingredients

• All-purpose flour: Provides structure for those tender cake layers while still keeping crumbs soft and delicate
• Baking powder: The leavening agent that gives your cake lift and ensures layers rise beautifully
• Salt: Balances sweetness and enhances all other flavors in both cake and frosting
• Unsalted butter: Room temperature butter creates the perfect base for both fluffy cake and silky buttercream
• Granulated sugar: Sweetens while creaming with butter creates air pockets for a light texture
• Large eggs: Must be room temperature to properly emulsify and create structure
• Whole milk: Adds moisture and fat for a tender crumb that doesn't dry out
• Fresh strawberries: Finely chopped berries distribute pockets of fruit throughout the cake
• Vanilla extract: Deepens flavor complexity in both cake layers and frosting
• Rainbow sprinkles: Use jimmies-style sprinkles that hold their shape during baking
• Powdered sugar: Sifted sugar creates smooth buttercream without grit or lumps
• Strawberry puree: Blended and strained berries give frosting natural color and intense flavor

Instructions

Get your oven and pans ready:

Preheat your oven to 350°F (175°C) and thoroughly grease two 8-inch round cake pans, lining the bottoms with parchment paper for easy release later.

Whisk the dry ingredients:

In a medium bowl, whisk together flour, baking powder, and salt until well combined, ensuring even distribution of leavening.

Cream butter and sugar:

Beat softened butter and granulated sugar on medium-high speed for 3 to 4 minutes until the mixture becomes pale, fluffy, and significantly increased in volume.

Add eggs and vanilla:

Add eggs one at a time, mixing thoroughly after each addition, then stir in the vanilla extract until fully incorporated.

Combine wet and dry:

With mixer on low speed, add flour mixture in three additions, alternating with milk, beginning and ending with flour mixture.

Fold in berries and sprinkles:

Gently fold chopped strawberries into the batter, then carefully add rainbow sprinkles, mixing just until distributed to prevent colors from bleeding.

Bake the layers:

Divide batter evenly between prepared pans, smooth tops, and bake for 28 to 32 minutes until a toothpick inserted in the center comes out clean.

Cool completely:

Let cakes cool in pans for 10 minutes before turning out onto wire racks to cool completely before frosting.

Make strawberry buttercream:

Beat butter until creamy, gradually add sifted powdered sugar, then mix in strawberry puree, vanilla, and salt until smooth and fluffy.

Assemble and frost:

Place one cake layer on a serving plate, spread with buttercream, top with second layer, and frost top and sides with remaining frosting.

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Last summer, I brought this cake to a neighborhood potluck, and within minutes, three different people had asked for the recipe. The best moment was watching the kids discover the sprinkles inside their slices, their eyes widening as if they'd found something magical. That's the thing about this cake, it manages to feel sophisticated and playful all at once, exactly how dessert should be.

Making The Perfect Strawberry Puree

I learned through trial and error that the secret to vibrant strawberry buttercream lies in properly preparing the fruit puree. Blend fresh strawberries until completely smooth, then press through a fine-mesh sieve to remove all seeds and pulp. The resulting liquid should be the consistency of thin juice and intensely red, which means maximum strawberry flavor in every bite of frosting.

Choosing The Right Sprinkles

Not all sprinkles are created equal when it comes to baking inside cake batter. I recommend using jimmies-style rainbow sprinkles rather than nonpareils or quins, as they hold their shape and color better in the oven. Avoid metallic or pearlized sprinkles for the cake interior, as they can discolor during baking, but save the fancy ones for decorating the outside.

Storage And Serving Tips

This cake is at its absolute best within the first 24 hours, when the strawberries taste freshest and the crumb is most tender. Room temperature storage in an airtight container works for one day, but after that, refrigeration becomes necessary due to the fresh fruit components. Bring refrigerated slices to room temperature for 30 minutes before serving, as cold buttercream loses its silky texture.

• The cake layers can be wrapped tightly and frozen for up to one month before frosting
• If frosting becomes too soft while decorating, refrigerate the entire cake for 15 minutes to firm it up
• Extra strawberry puree can be frozen in ice cube trays for future baking projects

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Every slice of this cake brings a little burst of joy, the kind that comes from rainbow colors and fresh berries and the simple pleasure of dessert made with love. May your kitchen be messy, your sprinkles be plentiful, and your celebrations be sweet.

Recipe FAQs

→ Can I make this cake ahead of time?

Yes, bake the layers up to 2 days in advance. Wrap cooled cakes tightly in plastic and store at room temperature. Make the buttercream ahead and refrigerate, then bring to room temperature and re-whip before frosting. The assembled cake stays fresh for 1 day at room temperature or 4 days refrigerated.

→ What type of sprinkles work best?

Use traditional jimmies-style rainbow sprinkles rather than nonpareils or quins. Jimmies hold their shape during baking without bleeding excessive color into the batter. Avoid metallic or glitter sprinkles as they can fade and lose their sparkle in the oven.

→ Can I use frozen strawberries?

Frozen strawberries work for both the cake and frosting. Thaw completely and drain excess liquid before chopping for the batter. For the buttercream puree, thaw, blend, and strain thoroughly to remove any seeds or fibrous pieces. You may need slightly less frozen fruit than fresh due to water content.

→ How do I prevent sprinkles from sinking?

Toss the rainbow sprinkles in about 1 tablespoon of flour before folding them into the batter. This light coating helps them suspend throughout the cake rather than settling at the bottom. Also avoid over-mixing once the sprinkles are added to prevent colors from bleeding.

→ Can I convert this to cupcakes?

Certainly. This recipe yields approximately 24 standard cupcakes. Fill lined muffin tins about two-thirds full and reduce baking time to 18-22 minutes at 350°F. Test doneness with a toothpick. Frost cooled cupcakes using the same strawberry buttercream with a piping bag or offset spatula.

→ Why is my buttercream too soft or runny?

The strawberry puree adds moisture, so consistency varies. If too soft, add more powdered sugar one tablespoon at a time until thickened. If too stiff, incorporate milk or cream one teaspoon at a time. For best results, use puree at room temperature and ensure the butter is properly softened but not melted before mixing.