How To Make A Buttercream Starfish Cake

SERVES 20-25


This adorable cake starts with our starfish cake pan, which is not only easy to use but takes the guess work out of cutting and carving the cake into a star shape. We decided to ice the cake in various tones of peachy pink buttercream to make it as colorful as possible and didn't sweat making the icing perfectly smooth. We used a few different size piping tips to add texture on top and dressed up the cake with brown sugar sand and chocolate sea shells (we used a mold for these too).


This versatile cake is easy and beginner friendly and perfect for a mermaid party, a beach themed bridal shower or an under the sea soiree. To get started, you can use one box mix cake, which fits the pan perfectly, or go with our homemade Classic Chocolate Cake recipe but only fill the pan 2/3 of the way and use any leftover cake batter for cupcakes.


For buttercream, we opted for Mary's Meringue Buttercream recipe but our slightly sweeter Brenda's Bakery Buttercream recipe would work just as well.

Availability: In stock

Shop ProductsPriceQty
Starfish Shaped Cake Pan
$9.95
3-D Mini Seashells Chocolate Mold
$3.95
12 oz. Creamy White Candy Coating
$5.95
# 6 Round Tip
$2.95
# 3 Round Decorating Tip
$2.95
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Availability: In stock

Start by spraying your cake pan generously with pan release spray. Bake your box mix or homemade cake. Once out of the oven and slightly cooled, slice off any large lumps from the middle of the cake to make an even surface and then flip out onto your cake display board. Wrap in plastic wrap and place in the freezer for an hour or two to firm up the cake. This will help with the icing step.

It Starts With A Starfish Shaped Cake Pan

Using a combination of red, pink and yellow gel paste, tint your buttercream dark peach and light peach. Leave some buttercream untinted for piping the texture. We used #6 round tips on the peach bags. We started with a # 6 on the white bag for piping the larger dots and then switched to a #3 round tip.

Buttercream Colors

Pipe the dark and light peach buttercream as shown.

Pipe Ombre Buttercream To Make Colorful

Use a spatula to smooth the buttercream making sure to clean off the spatula in between swipes. If you want it extra smooth, dip you spatula in hot water then dry before swiping.

Smooth The Buttercream To Blend The Colors

Outfit your bag with the #6 tip and pipe your first line of dots inside the dark pink center. Make larger dots toward the center and smaller dots toward the edges.

Pipe Large White Dots For Texture

Now switch to the # 3 tip and create a line of dots on the outside of your first design.

Pipe Another Row Of Dots For Texture

Fill in the sides of the cake with random piped dots. There's no need to make them in organized rows.

Finish With Tiny Buttercream Dots

Melt some white candy coating on half power in the microwave, stirring every 30 seconds until melted. Spoon into the shell mold cavities and then rap the mold on the counter firmly to settle the coating. Place in the freezer for 15 minutes.

Melt Candy Coating and Spoon Into Shell Mold

Pop the shells out by flipping the mold.

Pop Chocolate Shells Out Of The Mold

Spoon brown sugar around the base of the cake and add the shells. Voila! Your adorable, easy, fabulous starfish cake is done!

The Finished Starfish Cake!

The Finished Buttercream Starfish Cake

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