Make Starbucks Birthday Cake Pop Recipe: moist cake centers coated in glossy white chocolate with festive sprinkles. Try this fun, crowd-pleasing treat.
Follow the cake mix package directions exactly: combine the yellow cake mix with the required eggs, oil, and water and bake until a toothpick comes out clean. Let the cake cool completely on a wire rack until it reaches room temperature so it can be handled and crumbled without steaming out moisture.
Break the cooled cake into large chunks and crumble it into a large bowl with your fingers or a fork, aiming for a mixture of fine crumbs and a few slightly larger bits to preserve a tender, slightly textured interior in the finished pops.
Soften the unsalted butter until pillowy, then beat it while gradually adding powdered sugar, vanilla extract, and the heavy cream until the frosting is silky, smooth, and slightly glossy — soft enough to bind crumbs but not runny.
Fold the buttercream into the crumbled cake in stages, using a spatula until the mixture clumps together and holds its shape when squeezed — moist, dense, and pliable but not greasy. Taste and, if needed, add a touch more frosting to reach a cohesive, rollable texture.

Scoop and roll the mixture into uniform small balls with slightly textured surfaces, placing them on a parchment-lined baking sheet so they sit in neat, even rows, ready for stick insertion.
Gently insert lollipop sticks into the center of each ball and chill the tray in the refrigerator until the cores are firm enough to dip — this solidifies the shape for a clean coating.
Melt the white chocolate or candy melts in a microwave-safe bowl, stirring every 30 seconds until fully smooth and glossy, careful to avoid seizing so the coating remains fluid for dipping.
Holding each chilled pop by its stick, dip it fully into the melted coating, lift and allow excess to drip back into the bowl so the surface becomes smoothly enrobed with a thin, even shell.
Before the coating sets, sprinkle the tops with your chosen decorations — tiny nonpareils or confetti sprinkles — working quickly so they adhere to the warm glaze and create a festive, tactile surface.
Place the finished cake pops upright in a stand or block so the coating can fully harden without smudging; once set the shells will be slightly glossy with a crisp snap and a tender, moist interior.
Transfer fully set pops to an airtight container to preserve freshness, or arrange them on a serving plate and tie a small twine bow around a bundle of sticks for a friendly presentation when serving.
