Strawberry Funfetti Cake with Buttercream

The kitchen smelled like strawberries and summer the first time I attempted this cake. My niece had requested something fun for her birthday, and I wanted to surprise her with a cake that looked like celebration itself. Watching rainbow sprinkles tumble into the batter felt like confetti frozen in time, and I knew this would become my go-to for any moment worth marking.

I made this for a friend's promotion celebration last spring. She took one bite of the frosting and immediately asked for the recipe, then proceeded to lick the offset spatula when she thought no one was watching. That's when I knew this wasn't just cake, it was the kind of dessert that makes people abandon their table manners.

Ingredients

• All-purpose flour: The structure that holds all those happy rainbow sprinkles in place without collapsing under their weight
• Baking powder: Essential lift, don't skip or substitute unless you want dense sad cake
• Salt: Just enough to make the strawberry flavors sing instead of whisper
• Unsalted butter: Room temperature is non-negotiable, cold butter creates weird lumps that never disappear
• Granulated sugar: Creamed properly with butter until it looks like fluffy white clouds, this step is worth every minute
• Eggs: Must be room temperature or they'll seize the batter and create weird curdled-looking pockets
• Whole milk: Also room temperature, because temperature shock can make the batter separate
• Fresh strawberries: Finely chopped so they distribute evenly instead of sinking to the bottom like sad little anchors
• Pure vanilla extract: The bridge that connects strawberry and butter flavors into something cohesive
• Rainbow sprinkles: Use jimmies, not nonpareils, or you'll get weird bleeding colors throughout your cake
• Unsalted butter for frosting: Beat it alone first until it looks like pale ice cream, this airiness changes everything
• Powdered sugar: Sifted or you'll spend forever picking out tiny lumps that refused to incorporate
• Strawberry puree: Blend fresh berries and strain out the seeds or your frosting will have annoying little bits
• Milk or cream: Only add if your frosting is stiff, sometimes the strawberry puree provides enough liquid

Instructions

Preheat and prep your pans:

Get your oven to 350°F and grease two 8-inch round pans with butter, then line with parchment circles so you never deal with stuck cake tragedy again.

Whisk the dry ingredients:

In a medium bowl, combine flour, baking powder, and salt so they're evenly distributed before they meet the wet ingredients.

Cream butter and sugar:

Beat together on medium-high speed for 3-4 minutes until it's pale and fluffy, this creates the tender crumb texture that makes people ask what's different about your cake.

Add eggs and vanilla:

Drop in eggs one at a time, letting each fully incorporate before adding the next, then pour in that vanilla extract.

Combine wet and dry:

With mixer on low, add flour mixture in three parts, alternating with milk in two parts, starting and ending with flour so the gluten doesn't develop too much.

Fold in the fun stuff:

Gently hand-fold those chopped strawberries and sprinkles, being careful not to over-mix or your beautiful rainbow will turn muddy pink.

Bake until perfect:

Divide batter evenly between pans, smooth the tops, and bake for 28-32 minutes until a toothpick comes out clean with maybe a few moist crumbs but never wet batter.

Cool completely:

Let cakes rest in pans for 10 minutes, then turn onto wire racks, and I mean completely cool or your buttercream will melt right off that warm cake.

Make strawberry buttercream:

Beat butter until creamy, gradually add powdered sugar, then mix in strawberry puree and vanilla until it's smooth and tastes like summer sunshine.

Assemble and frost:

Spread buttercream between layers, then frost top and sides, and don't stress about perfection because the sprinkles hide all your mistakes.

Pin it

My sister requested this for her wedding anniversary instead of a fancy bakery cake. She said the rainbow sprinkles reminded her of our childhood birthday parties, and that's exactly the kind of memory food should carry forward into new celebrations.

Making Strawberry Puree That Actually Works

Blend fresh strawberries until completely smooth, then push through a fine mesh sieve. The seeds might seem small but they create this weird gritty texture in frosting that nobody wants. One cup of berries gives you about the quarter cup you need for this recipe.

The Right Sprinkles Matter

Those tiny ball sprinkles called nonpareils will bleed color everywhere and make your cake look like a tie-dye accident. Use the long tubular sprinkles called jimmies instead, they hold their color and stay suspended beautifully in the batter instead of sinking to the bottom.

Getting That Bakery-Style Finish

Chill your frosted cake for 15 minutes before doing the final smooth pass with your offset spatula. This trick prevents the frosting from pulling up and looking streaky, and suddenly you have that professional finish that makes people think you have secret baking skills.

• Add sprinkles to the sides immediately after frosting while it's still sticky so they actually adhere
• If your buttercream splits and looks curdled, keep beating, it almost always comes back together
• Room temperature cake is easier to slice than cold cake, let it sit out for 20 minutes before serving

Pin it

Every time I pull this cake out of the oven, those rainbow specks catching the light remind me that sometimes the most joyful things are also the simplest. Hope it brings as much color to your table as it has to mine.

Recipe FAQs

→ Can I use frozen strawberries instead of fresh?

Yes, frozen strawberries work well. Thaw completely and drain excess liquid before chopping for the cake batter. For the buttercream puree, blend thawed berries and strain thoroughly to remove excess moisture that could make the frosting too thin.

→ How far in advance can I make this cake?

The cake layers can be baked and wrapped in plastic up to 24 hours ahead. Store at room temperature. The buttercream can be prepared 1-2 days in advance and refrigerated—bring to room temperature and re-whip before using. Once assembled, the cake is best enjoyed within 2 days but keeps refrigerated for up to 4 days.

→ What type of sprinkles work best?

Use jimmies-style sprinkles (the elongated cylinder shape) rather than nonpareils or quins. Jimmies hold their shape better during baking and won't bleed color as much. Avoid metallic or pearl sprinkles in the batter as they may melt. Save decorative sprinkles for the outside decoration.

→ Can I convert this to cupcakes?

Absolutely. The batter yields approximately 24-30 standard cupcakes. Fill liners about two-thirds full and reduce baking time to 18-22 minutes at the same temperature. Cupcakes are easier to frost and transport, plus they bake more quickly for last-minute celebrations.

→ Why is my buttercream too thin or curdled?

If the frosting separates or appears curdled, the ingredients were likely too cold or the strawberry puree had too much liquid. Ensure butter is softened but not melted. If curdling occurs, continue beating for several minutes—it often comes together. If too thin, gradually add more sifted powdered sugar until the desired consistency is reached.

→ Can I make this cake gluten-free?

Yes, substitute the all-purpose flour with a high-quality gluten-free flour blend that contains xanthan gum. The texture will be slightly denser but still delicious. Also verify that your sprinkles are certified gluten-free, as many contain wheat-based ingredients. All other components are naturally gluten-free.