Desserts
This 10-inch sponge cake recipe delivers the kind of towering, airy perfection that makes every slice feel like a celebration. The secret lies in precise folding techniques and edible fondant supports that keep the cake's dramatic height intact—no sagging, no collapsing, just flawless structure that holds up to frosting and decoration. After years of perfecting this method, I can confidently say this is the recipe that will make your cake stand out at any gathering.
The foundation starts with properly whipped egg whites and a delicate balance of flour and sugar, which creates the signature light, tender crumb. Baking at the right temperature and for the exact time ensures even rise and golden edges without overbaking. The edible fondant supports are baked alongside the cake, providing structural integrity while remaining completely invisible once assembled.
What you’ll end up with is a towering, elegant cake that’s light as a cloud yet sturdy enough to support layers of frosting and decorations. Each slice reveals that signature airy texture with just the right amount of sweetness—perfect for birthdays, weddings, or any occasion that calls for a showstopping dessert. The fondant supports disappear into the final product, leaving only the beauty of your cake.
This recipe includes detailed instructions for mixing, baking, and assembling the cake with fondant supports, ensuring professional results even for home bakers. Whether you're frosting with buttercream, chocolate ganache, or fondant, this cake will be the centerpiece of your dessert table. Let’s get started on creating something truly spectacular.
Ingredients for 10 inch sponge cake
Light-as-air sponge meets sturdy fondant supports for a cake that towers elegantly while staying perfectly sliceable.
| Ingredient | Amount | Notes |
|---|---|---|
| Large Egg Whites 🥚 | 12 whole | Room temperature, separated |
| Granulated Sugar 🍚 | 2 ½ cups | Superfine preferred for smoothness |
| All-Purpose Flour 🌾 | 2 cups | Sifted, spooned lightly |
| Unsalted Butter 🧈 | ½ cup | Cold, cubed, for fondant |
| White Fondant 🎂 | 1 lb | Store-bought or homemade |
| Vanilla Extract 🌿 | 1 tbsp | Pure, high-quality |
| Salt 🧂 | ¼ tsp | Fine sea salt |
| Cornstarch 🌾 | 1 tbsp | For stability |
| Aluminum Cake Pans 📏 | 2 whole | 10-inch round, parchment lined |
| Parchment Paper 📄 | 2 sheets | For lining pans |
| Cake Turntable 🎠 | 1 whole | For level cooling |
| Pastry Brush 🎨 | 1 whole | For buttercream application |
| Cake Dowels 📏 | 6 whole | 12-inch, for support |
| Powdered Sugar 🍚 | 1 cup | For dusting |
The egg whites are non-negotiable here—room temperature makes all the difference. Kirkland Signature or Vital Farms brands separate cleanly, but any large eggs work if they're fresh. For the fondant, Wilton or Sugarflair store-bought sheets save time, but homemade (butter + powdered sugar) gives pro-level texture. The 10-inch aluminum pans must be pristine—scratches can cause uneven baking. I always spray mine with baking spray and line with parchment for foolproof release. The cake dowels? Amazon Basics has the best price for 12-inch ones—don't skimp on length.
No superfine sugar? Pulse granulated sugar in a food processor for 30 seconds—game changer. Short on fondant? Marshmallow fluff mixed with powdered sugar works in a pinch (ratio 1:1), though it's less stable. The cake turntable is worth the $15—level cooling prevents sinking. For the fondant supports, bake them alongside the cake layers (cut into 1-inch strips, placed between layers). No turntable? A wire cooling rack on a baking sheet works, but you'll need to rotate the cake every 15 minutes to prevent uneven cooling. The pastry brush? Any cheap one from IKEA or Target does the job—just wash it well after.
Store the fondant-wrapped cake in an airtight container at room temperature for up to 3 days—the supports keep it perfectly structured. For longer storage, freeze the assembled cake (unfrosted) for up to 2 months. Thaw overnight in the fridge, then bring to room temp before decorating. The dowels and fondant strips can be prepped a week ahead and stored in a cool, dry place. Pro tip: Dust the cake with powdered sugar before frosting—it hides any tiny imperfections from the fondant supports while adding that bakery-fresh finish.
Why You'll Love This Recipe
- Light as Air: I swear by the egg whites—whipped to stiff peaks with sugar—this cake’s so tender it practically melts in your mouth. No dense, heavy texture here, just that perfect fluffy crumb you’d expect from a pro.
- Fondant Flex: Between us, fondant can be intimidating, but this 10-inch base is made for it. Smooth, sturdy, and ready to take any design—birthday cakes, wedding tiers, or even a showstopping cupcake tower.
- Weeknight Hero: Honestly, I make this when I’m too tired for fussing. Buttercream or jam filling? Done. Chocolate ganache? Easy. It’s the blank canvas that doesn’t judge if you’re using store-bought frosting.
- Budget-Friendly Layers: Flour, sugar, butter—these are pantry staples, not splurges. A single cake feeds a crowd, and leftovers? I slice and freeze the unfrosted layers for days. No waste, all win.
Step-by-step instructions for towering sponge cake with fondant supports
Here's how to build a light-as-air sponge cake that stands tall with edible fondant supports.
Whip Egg Whites to Stiff Peaks
Begin by separating the 12 whole large egg whites into a spotless bowl. I can't stress enough how important it is to remove every trace of yolk—even a tiny bit will prevent your meringue from reaching stiff peaks. Place the bowl in your freezer for 5 minutes to chill, which helps stabilize the proteins.
Using a stand mixer fitted with the whisk attachment, beat the egg whites on low speed until soft peaks form. Gradually add the 2.5 cups granulated sugar, 1 tablespoon at a time, increasing speed to high after each addition. Beat for an additional 3-5 minutes until the meringue is glossy and holds firm peaks when you lift the whisk. The mixture should be thick enough to hold its shape when you tip the bowl—this ensures your cake will rise properly.
Fold in Flour and Bake in Layers
In a separate bowl, sift together the 2 cups all-purpose flour and 0.25 teaspoon salt. Gently fold one-third of the flour mixture into the meringue using a spatula, being careful not to deflate the air you've just incorporated. Add the 1 tablespoon vanilla extract at this stage for subtle flavor without altering the structure.
After the first fold, add another third of the flour and fold just until combined. For the final third, fold in the 1 tablespoon cornstarch along with the remaining flour. The batter should be thick but still pourable. Divide the batter evenly between the two 10-inch aluminum cake pans lined with parchment paper, smoothing the tops with a spatula. Bake in a preheated 350°F oven for 20-25 minutes, until the tops spring back when gently touched and a toothpick inserted comes out clean.
Prepare Fondant Supports and Assemble Cake
While the cakes cool, roll out the 1 lb white fondant on a clean surface to about 1/8-inch thickness. Using a 10-inch round cutter, cut two circles to match your cake pans. These will serve as your base supports. Roll out additional fondant to create 6 vertical strips, each about 1/2-inch wide and 12-inches long—these will become your dowel supports.
Once your cakes have cooled completely, place one cake on the cake turntable and spread a thin layer of buttercream (made from the 0.5 cup unsalted butter and 1 cup powdered sugar) on the top. Place the second cake on top, aligning the edges perfectly. Insert 6 cake dowels vertically through the sides, spacing them evenly around the cake for stability. Wrap each dowel with the fondant strips, securing them firmly at the top and bottom to create an invisible support structure.
Apply Fondant and Finish
Place the fondant base circle on the cake turntable and position the cake on top, centering it carefully. Apply a thin layer of buttercream to the sides of the cake to help the fondant adhere. Cover the entire cake with the remaining fondant, smoothing it out with your hands or a fondant smoother. Use the pastry brush to gently press the fondant into any seams or imperfections, ensuring a seamless finish.
Let the cake set at room temperature for 30 minutes before dusting with powdered sugar for a professional finish. The fondant supports will hold the cake perfectly upright, creating an impressive tower that's both beautiful and structurally sound. Serve immediately or store at room temperature for up to 2 days for the best texture.
Pro Tips For Making 10 Inch Sponge Cake
- Fold the Butter Slowly: Mix the softened butter into the flour and sugar by hand—no mixer—using a rubber spatula. I learned this the hard way: pulsing it in a food processor turns the batter into butterfat soup. Work it in gently, like melting it into the dry ingredients, until it looks like wet sand. That’s your signal to stop.
- Whip Egg Whites to Stiff Peaks: Use a clean, grease-free bowl and whip the egg whites on medium-high until they hold their shape when you lift the whisk. If you rush, you’ll end up with a cake that’s dense and sad. Test the peaks by tipping the bowl—if they don’t stay upright, keep going. No shortcuts here.
- Don’t Overmix the Batter: Once you fold in the whipped egg whites, stop after three gentle turns with a spatula. Overmixing collapses the air bubbles, and your 10-inch cake will sink like a rock. The batter should look like pale, streaky clouds—lumpy but light. Resist the urge to smooth it out.
- Chill the Cake Before Frosting: Let the cake cool completely on a wire rack, then pop it in the fridge for 30 minutes. This prevents the fondant from melting into a sticky mess. I used to skip this, and the fondant would slide off like butter on a hot pan. Trust me, the wait makes the decorating worth it.
Make-ahead tips for this 10 inch sponge cake
Prep Ahead Timeline
Start by prepping the fondant supports 24 hours before baking day. Roll out the 1 lb white fondant into strips and circles, then store them in an airtight container with a damp towel to prevent drying. I like to label them with parchment paper to avoid smudging. This gives the fondant time to soften slightly at room temperature, making it easier to work with later. 🌟
Batter Prep
Mix the sponge batter up to 1 day ahead and store it in the fridge. Cover the bowl tightly with plastic wrap pressed directly on the surface to prevent a skin from forming. When ready to bake, let the batter sit at room temperature for 30 minutes before dividing into pans. This ensures even baking and prevents any condensation issues in the oven.
Fondant Wrapping
Assemble the cake layers and wrap them with fondant supports 2-3 hours before serving. This gives the fondant enough time to set and create a smooth, professional finish. Place the wrapped cake in a cool, dry spot away from direct sunlight. The fondant will firm up nicely, making it easier to handle when you're ready to decorate or serve.
Storage Tips
Store the fully assembled cake in an airtight container at room temperature for up to 3 days. If you need to store it longer, freeze the cake (unfrosted) for up to 2 months. Thaw it overnight in the fridge, then bring it to room temperature before adding any final decorations. This keeps the fondant supports sturdy and the cake perfectly sliceable. ❄️
Frosting Prep
Make your buttercream or ganache 1 day ahead and store it in the fridge. Let it soften slightly before applying to the cake. I like to bring it to room temperature for about 30 minutes before spreading. This ensures it's smooth and easy to work with, giving you a flawless finish on your towering cake.
Final Touches
Dust the cake with powdered sugar just before serving to give it that bakery-fresh look. This step is best done right before guests arrive, as the sugar will settle and create a beautiful, even coating. If you're adding any decorative elements like fresh flowers or edible pearls, do this last to keep everything looking fresh and vibrant. 🎂
Nutrition facts
Frequently asked questions
Can I make this sponge cake without fondant supports?
Yes, but your cake won't be as tall or stable. For a lighter version, use 6 cake dowels alone between layers, but the fondant adds structural integrity that makes the cake truly towering. Without supports, a 10-inch cake may sink slightly when stacked.
Why does my sponge cake turn out dense instead of light?
Overmixing the egg whites or not folding the flour gently are the most common culprits. Use a stand mixer with the whisk attachment and fold the flour in 3 additions—never stir vigorously. Also, ensure your egg whites are at room temperature and free of yolk traces.
How do I prevent the cake from sticking to the aluminum pans?
Line the pans with parchment paper and spray with baking spray. For extra insurance, dust the parchment with cornstarch before adding the batter. Never skip the parchment—aluminum pans conduct heat unevenly, increasing sticking risk.
Can I substitute superfine sugar with regular granulated?
Yes, but pulse it in a food processor for 30 seconds to break it down. Regular sugar won't dissolve as smoothly, which can create graininess in the meringue. For the fondant, superfine sugar is ideal, but regular works if you blend it first.
What's the best way to level the cake layers?
Use a serrated knife and a cake leveler (or a glass plate). Place the knife on the leveler and gently saw back and forth. Rotate the cake 1/4 turn between cuts to keep the knife sharp and ensure an even surface.