Little white, red, and pink sprinkles cover my Valentine’s Day sprinkle heart cake, with a few small heart-shaped pockets of white buttercream peeking through. It might look intimidating at first, but this technique is surprisingly easy and actually fun to do.
Many bakers press sprinkles into the sides of a freshly frosted cake by hand—I do this often and it works well. But when you want to cover a whole cake quickly and evenly, there’s a simple trick that takes seconds: roll the cake in the sprinkles.
Yes—roll it. If you’re nervous about handling a cake, don’t worry. Follow the steps below and you’ll find it’s straightforward. With a little practice, you’ll be rolling cakes into sprinkles every chance you get.
STEP 1: Frost your cake on a cardboard round that matches the cake size. For example, frost a 6″ cake on a 6″ cardboard round so you can lift the cake by that board without damaging the bottom layer. I often tape a smaller board to a larger one (for instance, a 6″ board to an 8″ board) to make decorating and storage easier. Work with the cake chilled or frozen for less mess—cold frosting holds better.
STEP 2: Once the cake has an even final layer of frosting (not just a crumb coat), place a same-size cardboard round on top of the cake. This gives a clean edge and protects the top when you handle the cake on its side.
STEP 3: With cardboard rounds on both the top and bottom, you’re ready. Spread your sprinkles in a flat, even layer on a cookie sheet. I typically use about 1 1/2 to 2 standard sprinkle bottles. Nonpareils work best because they’re small and cling evenly; if your mix contains larger sprinkles, set those aside and add them by hand later.
STEP 4: Hold the cake sideways with one hand on each cardboard round. With the frosting still wet (don’t let it fully set), roll the cake along the sprinkles starting from the edge closest to you. Lift the cake and gently shake the pan to redistribute any loose sprinkles, then roll again until the sides are fully covered. Keep your movements steady and confident—the cardboard rounds protect the cake and make this much easier.
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STEP 5: Freeze the cake for about 5 minutes. Then, use a sharp paring knife to remove the top cardboard round. Add a thin layer of buttercream to the top—just enough to make the sprinkles stick—and press sprinkles onto the top surface.
That’s it. The technique is quick and creates an even, full coverage of sprinkles.
If you want the heart shapes visible in the sprinkle layer like on my cake, cut small heart shapes from parchment paper before you roll the cake. After frosting and before rolling, press the parchment hearts gently but securely against the sides so the edges seal and sprinkles can’t slip underneath. Roll the cake in sprinkles as described, then freeze. After the brief freeze, carefully peel away the parchment hearts (a thin knife can help lift an edge). If buttercream lifts with the parchment, freeze a little longer next time—the parchment should come off cleanly.
If you prefer video guidance, I recorded the process while making this cake to show each step in action. For piping details I used a Wilton 8B tip and assembled the cake with an almond cream cheese buttercream.
I had so much fun making this cake and experimenting with the technique. It’s quick, versatile, and perfect for creating bold sprinkle-covered designs. If you try this method, I’d love to see your results—tag your photos on social media if you share them.
xoxo,
Mandy