Constellation Pisces Cake

Name: Constellation Pisces Cake
Prep time: 30 min
Cook time: 45 min
Total time: 1 h 15 min
Yield: 12 servings
Ingredients: 1 ¾ cups all-purpose flour; 1 ½ cups granulated sugar; ½ cup unsweetened cocoa powder; 1 ½ teaspoons baking powder; 1 teaspoon baking soda; ½ teaspoon salt; 2 large eggs; 1 cup milk; ½ cup vegetable oil; 2 teaspoons vanilla extract; 1 cup boiling water; 1 cup unsalted butter, softened; 4 cups powdered sugar; 2 tablespoons milk; 2 tablespoons freshly grated orange zest; 2 tablespoons orange juice; Silver star sprinkles; Edible glitter; Fresh orange slices

Highlighted under: Home Baking Ideas

I’m thrilled to share my Constellation Pisces Cake, an enchanting dessert that combines both beauty and flavor. Each layer is lovingly crafted to mirror the stars of the Pisces constellation, making it a delightful showstopper for birthdays and special occasions. With its unique combination of flavors, this cake not only looks stunning but also offers a moist texture and a deliciously sweet finish. Join me on a cake-making adventure that is sure to impress your guests and satisfy your sweet tooth!

Created by

Sophie Adams

Last updated on 2026-03-05T07:25:53.937Z

When I first decided to create the Constellation Pisces Cake, I wanted it to reflect both the beauty of the stars and the flavors I loved. My flavor combination—chocolate and orange—turned out to be heavenly. The zesty orange adds a refreshing contrast to the rich dark chocolate, creating a delightful burst in every bite. I found that using freshly grated orange zest makes all the difference!

During my baking journey, I experimented with different layering techniques. The sponge cakes needed to be light and airy to support the delicate icing. I also discovered that chilling the layers before assembly helped the cake set beautifully, preventing any mishaps while decorating. This cake isn't just a treat for the taste buds—it's an art piece I hope you enjoy creating as much as I did!

Why You Will Love This Recipe
Beautiful design representing the Pisces constellation
Irresistible chocolate and orange flavor pairing
Perfect for impressing guests at celebrations

Mastering the Chocolate Sponge

The chocolate sponge is the foundation of this cake, providing a rich and moist base that complements the orange buttercream beautifully. Mixing the dry ingredients thoroughly ensures an even bake, which is crucial for achieving the light texture desired in each slice. When you add the boiling water to the batter, it activates the cocoa powder, enhancing its flavor and ensuring a moist crumb. Be cautious not to overmix after adding the water; just stir until the batter is combined to prevent a dense texture.

After baking your cakes for 30-35 minutes, it’s important to check for doneness using a toothpick inserted in the center. It should come out clean or with a few moist crumbs attached. If the cakes seem slightly domed, leveling the tops after they cool will provide a stable base for assembly. Allow the cakes to cool in the pans for about 10 minutes before transferring them to a wire rack to cool completely, as this step helps maintain their moisture.

Creating the Perfect Orange Buttercream

The orange buttercream is not just a flavorful addition; it's also key to the cake's overall texture and moisture. Softening the butter to room temperature helps it whip up to a creamy consistency more easily, creating a light and fluffy texture. Gradually incorporating the powdered sugar prevents clumping and ensures a smoother consistency. If your buttercream appears too thick, adding an extra splash of milk can help achieve the perfect spreading consistency without compromising flavor.

Incorporating fresh orange zest into the buttercream elevates its flavor profile. I recommend using a microplane for fine zest, which releases essential oils and intensifies the orange aroma. If you're looking for a deeper citrus flavor, consider adding a bit more orange juice, but do this sparingly to maintain the right spreading thickness. For a fun twist, try substituting blood orange or tangerine zest if you want to experiment with different citrus profiles.

Ingredients

Gather these ingredients to create a stunning Constellation Pisces Cake:

For the Chocolate Sponge

1 ¾ cups all-purpose flour
1 ½ cups granulated sugar
½ cup unsweetened cocoa powder
1 ½ teaspoons baking powder
1 teaspoon baking soda
½ teaspoon salt
2 large eggs
1 cup milk
½ cup vegetable oil
2 teaspoons vanilla extract
1 cup boiling water

For the Orange Buttercream

1 cup unsalted butter, softened
4 cups powdered sugar
2 tablespoons milk
2 tablespoons freshly grated orange zest
2 tablespoons orange juice

For Decoration

Silver star sprinkles
Edible glitter
Fresh orange slices

Once you have all your ingredients ready, it’s time to start baking your cake!

Instructions

Follow these steps to create your stunning Constellation Pisces Cake:

Prepare the Chocolate Sponge

Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans. In a large bowl, mix the flour, sugar, cocoa powder, baking powder, baking soda, and salt. Add the eggs, milk, vegetable oil, and vanilla extract. Beat on medium speed for 2 minutes. Stir in boiling water until smooth. Pour the batter into prepared pans and bake for 30-35 minutes.

Making the Orange Buttercream

In a mixing bowl, beat the softened butter until creamy. Gradually add the powdered sugar and mix until combined. Add milk, orange zest, and orange juice, mixing until the buttercream is fluffy and easily spreadable.

Assembling the Cake

Once the cakes are cool, level the tops if necessary. Place one chocolate sponge layer on a serving plate. Spread a layer of orange buttercream on top. Top with the second layer and cover the entire cake with the remaining buttercream.

Decorating

Using the silver star sprinkles and edible glitter, decorate the top of the cake to resemble the Pisces constellation. Add fresh orange slices around the base for a colorful touch.

Let the cake set for a while before slicing. Enjoy your beautiful creation!

Pro Tips

For a more intense orange flavor, try adding orange extract to the buttercream. Make sure your cake layers are completely cool before applying the frosting to avoid melting.

Decorating Tips

The decoration of the Constellation Pisces Cake is an opportunity to express creativity while enhancing its celestial theme. Using silver star sprinkles not only adds a visual appeal but also a fun crunch that contrasts with the soft cake and fluffy buttercream. For a professional touch, try applying the sprinkles selectively, clustering them in sections to mimic the stars of the Pisces constellation, which creates a more organized look rather than a scattered appearance.

Edible glitter is another beautiful addition but should be used sparingly to avoid overwhelming the cake’s natural beauty. A light dusting on the starry areas gives an ethereal shimmer, reminiscent of starlight. If you want to intensify the flavors, consider lightly toasting the fresh orange slices to enhance their sweetness and create a slight caramelization, which can pair delightfully with the chocolate layers.

Make-Ahead and Storage

For those planning ahead, you can bake the chocolate sponge layers a day in advance. Once cooled completely, wrap them tightly in plastic wrap and store them in the refrigerator. This not only saves time but also enhances the flavors as they rest. The orange buttercream can also be prepared a day ahead; just keep it in an airtight container in the fridge and give it a quick whisk before you use it to restore its fluffy texture.

If you have leftover cake, store it covered in the refrigerator for up to a week. To keep it fresh and moist, consider wrapping individual slices in plastic wrap. Alternatively, for longer storage, freeze the cake pieces. Wrap them well and place them in freezer bags; they should be good for about three months. When you’re ready to enjoy, simply thaw them in the refrigerator overnight before serving to preserve flavor and texture.

Questions About Recipes

→ Can I make this cake a day in advance?

Absolutely! Just store it in an airtight container at room temperature or in the fridge.

→ Can I use another flavor instead of orange?

Yes, feel free to experiment with lemon or any citrus zest that you love!

→ How do I prevent my chocolate sponge from sinking?

Make sure to follow the mixing times and avoid overbeating the batter, which can incorporate too much air.

→ What can I use if I don't have baking pans?

You can use a rectangular cake pan or even cupcake tins, just adjust the baking time accordingly.