Strawberry Funfetti Cake Buttercream

The kitchen counter was covered in a dusting of rainbow sprinkles when my youngest came home from school early last spring. She had been learning about colors in art class and wanted to bake something that captured everything she loved about the season. We rooted through the pantry and found those little strawberry boxes from the morning market run, and suddenly this cake felt like the perfect afternoon project. The way her eyes lit up when the pink batter met those colorful jimmies stuck with me.

I made this cake again for my nieces birthday last month and watched six children press their faces against the glass as I pulled it from the oven. The whole house smelled like warm berries and vanilla, and honestly there is something magical about watching sprinkles peek through golden cake. My sister whispered that she had never seen the birthday girl so patient waiting for cake to cool.

Ingredients

• 2½ cups all-purpose flour: Spoon and level your flour instead of dipping directly to avoid dense cake layers
• 2½ tsp baking powder: Make sure this is fresh and not expired for proper rise
• ½ tsp salt: Balances the sweetness and enhances the strawberry flavor
• 1 cup unsalted butter softened: Leave it out for at least an hour so it creams perfectly with the sugar
• 1⅔ cups granulated sugar: Cream this with the butter for the full 3 to 4 minutes to create air pockets
• 4 large eggs room temperature: Cold eggs can cause the butter to seize and create curdled batter
• 1 cup whole milk room temperature: Using room temperature milk helps emulsify everything smoothly
• ⅔ cup finely chopped fresh strawberries: Pat them dry after chopping so they do not make the batter too wet
• 1 tbsp pure vanilla extract: Use real vanilla here because artificial extract can taste flat in buttercream
• ½ cup rainbow sprinkles: Use jimmies rather than nonpareils so the colors do not bleed into the batter
• 1 cup unsalted butter softened: This second batch of butter needs to be perfectly soft for silky buttercream
• 4 cups powdered sugar sifted: Sifting prevents lumps and saves you from overmixing later
• ¼ cup strawberry puree: Blend fresh berries and strain through a fine mesh for the smoothest frosting
• 1 tsp pure vanilla extract: This complements the strawberry without competing with it
• Pinch of salt: Just enough to round out the sweetness of the frosting
• 1 to 2 tbsp milk or cream: Only add this if your buttercream feels too stiff to spread

Instructions

Prepare your oven and pans:

Preheat to 350°F and grease two 8 inch rounds with butter then line the bottoms with parchment paper so nothing sticks.

Whisk the dry ingredients together:

Combine the flour baking powder and salt in a medium bowl and set it aside for later.

Cream the butter and sugar:

Beat them on medium high for 3 to 4 minutes until the mixture turns pale and fluffy like a cloud.

Add the eggs and vanilla:

Drop in the eggs one at a time letting each fully incorporate before adding the next then stir in the vanilla.

Combine wet and dry ingredients:

Mix in the flour mixture in three parts alternating with the milk on low speed until everything just comes together.

Fold in the strawberries and sprinkles:

Gently fold the chopped strawberries into the batter then add the sprinkles at the very end to prevent color bleeding.

Bake the layers:

Divide the batter between the pans smooth the tops and bake for 28 to 32 minutes until a toothpick comes out clean.

Cool completely:

Let the cakes rest in the pans for 10 minutes then turn them onto wire racks until they are fully cool to the touch.

Make the strawberry buttercream:

Beat the butter until creamy then gradually add the powdered sugar followed by the strawberry puree vanilla and salt.

Assemble and frost the cake:

Spread buttercream between the layers then frost the top and sides adding sprinkles on top if you like.

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My friend asked me to make this for her daughters garden themed birthday and the children went absolutely quiet when she cut the first slice. Something about the rainbow speckles against the pale pink frosting feels like pure happiness on a plate. That moment when the birthday girl whispered it was the best cake ever made all the testing worth it.

Working With Fresh Strawberries

Chop your strawberries into tiny even pieces so they distribute evenly throughout the batter without sinking to the bottom. I have learned that patting them dry with paper towels after chopping prevents the cake from becoming soggy in spots.

Getting The Buttercream Right

The strawberry puree should be completely smooth before you add it to the buttercream. If your frosting looks curdled or split keep beating it for another minute or two and it usually comes back together beautifully.

Make Ahead And Storage

You can bake the cake layers a day ahead and wrap them tightly in plastic at room temperature. The buttercream also keeps well in the refrigerator for up to three days just let it come to room temperature and give it a quick whip before frosting.

• Wrap unfrosted cake layers in plastic wrap and freeze for up to three months
• Bring chilled buttercream to room temperature before rewhipping for spreading
• Store the finished cake in a cake dome at room temperature for up to two days

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There is something so joyful about a cake that looks like a party on the inside and out. Hope this brings a little extra color to your kitchen table.

Recipe Questions

→ Can I make this cake ahead of time?

Yes, bake the layers up to 1 day in advance. Wrap cooled cakes tightly in plastic and store at room temperature. Frost within 24 hours for best texture and flavor.

→ How do I prevent sprinkles from bleeding into the batter?

Use jimmies-style sprinkles rather than nonpareils. Fold them in gently at the end, just until distributed. Over-mixing causes colors to run.

→ Can I use frozen strawberries?

Thaw frozen strawberries completely and drain excess liquid before chopping. Pat dry with paper towels to prevent adding too much moisture to the batter.

→ Why is my buttercream too thin or thick?

Adjust consistency with milk or cream. Add 1 tablespoon at a time if too thick. If too thin, gradually add more sifted powdered sugar until you reach spreading consistency.

→ How should I store the finished cake?

Keep at room temperature in an airtight container for up to 1 day. For longer storage (up to 4 days), refrigerate. Bring to room temperature before serving for best texture.

→ Can I convert this to cupcakes?

Yes, fill cupcake liners two-thirds full. Bake at 350°F for 18–22 minutes until a toothpick comes out clean. Yields approximately 24 cupcakes.