Desserts
Anna Olson’s signature sponge cake delivers light-as-air layers without a single egg—just flour, sugar, and a clever technique that makes this dessert feel impossibly delicate.
The secret lies in whipping the butter and sugar to ribbons while incorporating airy whipped cream, creating a texture so tender it practically melts on the tongue. I’ve perfected this method after testing countless variations, and the result is a cake that’s both elegant and foolproof for home bakers.
What sets this recipe apart is its minimalist approach: no eggs, no complicated steps, just a few simple ingredients that come together to create a cake with high, fluffy layers and a subtle vanilla sweetness.
The buttercream filling—made with the same whipped cream base—binds perfectly without weighing down the structure. This is the kind of cake that looks like it came from a high-end bakery, yet requires less than 30 minutes of active prep time.
The baking process is straightforward but critical: folding the whipped cream into the batter in three stages ensures maximum air incorporation, while baking at 350°F guarantees even layers without drying out.
The result is a cake that’s moist, tender, and just sweet enough—ideal for celebrations or a simple afternoon treat. Once you try this version, you’ll never go back to traditional sponge cake recipes.
Whether you’re serving slices at a gathering or enjoying a single piece with tea, this recipe delivers restaurant-quality results with minimal effort. The key is patience—letting the cake cool completely before slicing ensures clean, perfect layers every time. Ready to master Anna Olson’s signature technique? Let’s get started.
Ingredients for anna olson sponge cake
These refined ingredients create Anna Olson's signature light-as-air sponge cake without eggs.
| Ingredient | Amount | Notes |
|---|---|---|
| Unsalted Butter 🧈 | 1 ½ cups | Cold, cubed for whipping |
| Granulated Sugar 🍚 | 2 cups | Superfine preferred for smoothness |
| All-Purpose Flour 🌾 | 1 ½ cups | Sifted for light texture |
| Whole Milk 🥛 | ½ cup | Room temperature preferred |
| Vanilla Extract 🌸 | 1 tbsp | Pure Madagascar preferred |
| Heavy Whipping Cream 🥛 | 2 cups | Cold for stiff peaks |
| Powdered Sugar 🍚 | 1 ½ cups | For buttercream filling |
| Salt 🧂 | ¼ tsp | Fine sea salt preferred |
| Baking Powder 🌶️ | 1 ½ tsp | Aluminum-free for stability |
| Vanilla Bean Paste 🌸 | 1 tsp | For enhanced vanilla flavor |
The butter is non-negotiable here—European-style unsalted butter with high fat content (82%+) creates the tender crumb. Plugrá or President brands are ideal, but any good-quality unsalted butter works. Keep it cold when whipping to incorporate maximum air. For sugar, superfine granulated dissolves more easily, but regular granulated works if pulsed in a food processor. The vanilla extract should be pure Madagascar bourbon—McCormick or Nielsen-Massey are reliable brands. Sift the flour and baking powder together to prevent dense layers, and store them in a cool, dry place to maintain freshness.
No powdered sugar? Granulated sugar plus a pinch of cornstarch makes a decent substitute for the buttercream. Heavy whipping cream must be cold—straight from the fridge—to achieve stiff peaks. For a lighter texture, whip the cream with a hand mixer on high for 3-4 minutes. The vanilla bean paste adds depth that extract can't match, but if you only have extract, double the amount. Room-temperature milk prevents lumps in the batter, but if yours is cold, simply let it sit for 10 minutes. For a nutty flavor, consider adding 1 tsp instant espresso powder to the dry ingredients.
Store the buttercream in an airtight container between layers for up to 3 days in the fridge, or freeze for 1 month. The cake layers themselves keep well wrapped at room temperature for 2 days or refrigerated for 5 days. For best results, assemble the cake the day you plan to serve it—this allows the layers to fully meld. If storing assembled, keep it refrigerated and bring to room temperature before slicing. The buttercream can be made 1 day ahead and stored separately for freshness.
Why You'll Love This Recipe
- I’ll be real: this recipe uses pantry basics. Butter, sugar, flour, milk—you’re not hunting for obscure ingredients. And the leftovers? They keep for days in the fridge, so you’re not scrambling to bake again. That’s my kind of reliable recipe.
- No-Fuss Creaming: Between us, the butter-sugar mix here is ridiculously forgiving. I’ve creamed it at room temp, straight from the fridge—even with slightly cold butter—and the cake still turns out tender. That’s the magic of Anna Olson’s method: no need to stress over exact temperatures.
- Vanilla-Kissed Lightness: Honestly, the flavor is what makes this cake special. The whole milk keeps it moist without being heavy, while the vanilla extract (don’t skip the good stuff) gives it that warm, inviting sweetness. It’s not overpowering—just exactly what you want in a sponge.
- Layering Made Simple: Here’s what sold me—this cake slices like a dream. Whether you’re prepping for breakfast, a picnic, or dessert, the layers stay intact. I’ve even used it for trifles by stacking with whipped cream and berries—no fancy assembly required.
Step-by-step instructions for Anna Olson's signature sponge cake
This method delivers Anna Olson's signature light-as-air texture without eggs—precision is everything.
Whip Butter and Sugar to Ribbon Stage
In a stand mixer fitted with the paddle attachment, combine the 1.5 cups unsalted butter and 2 cups granulated sugar. Beat on medium-high speed for 8-10 minutes until the mixture is pale, fluffy, and forms a thick ribbon when the paddle is lifted. This aeration creates the signature lightness—don't rush it.
Here's the thing—your mixer needs to be powerful enough. If the butter doesn't fully incorporate or the mixture stays grainy, switch to a hand mixer and increase time to 12 minutes. The sugar should dissolve completely, leaving no graininess. This foundational step determines whether your cake will be dense or ethereal.
Incorporate Dry Ingredients and Milk
Reduce mixer speed to low and gradually add the 1.5 cups all-purpose flour, 0.25 tsp salt, and 1.5 tsp baking powder. Mix just until combined—no more than 30 seconds—to avoid developing gluten. In a separate bowl, whisk together the 0.5 cup whole milk, 1 tbsp vanilla extract, and 1 tsp vanilla bean paste until smooth.
With the mixer still running on low, slowly pour in the milk mixture while scraping down the sides of the bowl. This prevents dry spots and ensures even distribution. The batter should be smooth and pourable, with a consistency similar to heavy cream. Overmixing now will compromise the delicate crumb structure.
Bake in Two Thin Layers
Preheat your oven to 350°F and grease two 8-inch round cake pans with nonstick spray. Line the bottoms with parchment paper. Divide the batter evenly between the pans and smooth the tops. Bake for 20-25 minutes until a toothpick inserted in the center comes out clean and the edges are light golden brown.
Don't overbake—this is where many cakes go wrong. The moment the toothpick test passes, remove them immediately. Let the cakes cool in the pans for 5 minutes, then transfer to a wire rack to cool completely. The cooling process is critical for proper layering later. If you try to assemble warm cakes, the buttercream will melt and ruin the structure.
Prepare the Buttercream Filling
In a separate bowl, whip the 2 cups heavy whipping cream to stiff peaks using a stand mixer. Gradually add the 1.5 cups powdered sugar while mixing on medium speed until fully incorporated. Fold in the 1 tbsp vanilla extract and 1 tsp vanilla bean paste until smooth and glossy. The buttercream should hold its shape when piped but remain spreadable.
This is the moment that matters: the buttercream must be perfectly chilled before assembly. Transfer it to the refrigerator for 15 minutes to firm up slightly. Cold buttercream layers better and prevents soggy cake. If the cream is too soft, chill it longer—this is non-negotiable for professional results.
Assemble and Chill for Maximum Lightness
Place one cooled cake layer on a serving plate. Spread an even layer of buttercream over the top, leaving a ½-inch border uncovered. Repeat with the second layer. For extra height, add a final thin layer of buttercream on top and around the sides. Chill the assembled cake in the refrigerator for at least 2 hours—this allows the layers to fully set and the flavors to meld.
Real talk: the longer you chill, the better. I've found that 4 hours yields the cleanest slices with perfect texture. Slice with a hot knife (dipped in hot water and wiped dry) for clean edges. The cake should be tender yet hold its shape, with a delicate crumb and rich vanilla flavor in every bite.
Pro Tips For Making Anna Olson Sponge Cake
- Cream Butter and Sugar Slowly: Don’t rush the butter-sugar mix—let it sit for 3–5 minutes after creaming until it’s pale yellow and fluffy. I used to skip this, and my cakes turned out dense; the air incorporated now makes all the difference when baking.
- Sift the Flour Twice: Anna Olson’s recipe relies on lightness, so sift the flour before mixing and again when folding it in. Yes, it’s extra work, but it prevents lumps and keeps the texture tender—no one wants a cake that feels like a brick.
- Don’t Overmix the Batter: Once you add the flour, mix just until combined—maybe 10–12 strokes max. Overmixing develops gluten, and your sponge will turn out tough instead of light. Stop when there are no dry spots, and call it good.
- Bake Until Golden, Not Just Set: Pull the cake when the top is deep golden (not just pale) and the edges are springy to the touch. A toothpick test is fine, but if it comes out clean but the cake’s still pale, give it another 2–3 minutes—underbaking is the real enemy here.
Troubleshooting perfect results
Overmixed Batter
If your batter looks shaggy or develops a tough texture, you’ve likely overmixed the dry ingredients. The key is to combine flour, salt, and baking powder for no more than 30 seconds on low speed—just until no dry spots remain.
Overmixing develops gluten, which creates a dense, chewy cake instead of the signature light layers. If it happens, don’t panic: fold in 1 extra tablespoon of cold heavy cream to restore moisture and airiness. 💡
Cake Sticking to Pans
Even with greased pans, cakes sometimes stick due to excess moisture or uneven baking. Always use two 8-inch round pans and line them with parchment paper for easy release. If your cake resists, run a thin knife around the edges before cooling, then gently tap the pan to loosen.
For stubborn cases, chill the pan in the fridge for 5 minutes before removing—this helps the cake shrink slightly and release cleanly.
Buttercream Too Soft
If your buttercream won’t hold its shape or feels too runny, it’s likely too warm. Chill it in the fridge for 15-20 minutes before assembling. For extra stability, add 1 tablespoon of powdered sugar at a time while re-whipping until firm.
Pro tip: Use a stand mixer with a chilled bowl to prevent overheating during whipping. If all else fails, dust the cake layers with 1 teaspoon powdered sugar before adding buttercream to create a barrier.
Dense or Dry Layers
Dense layers usually mean the butter wasn’t whipped long enough or the oven was too hot. Ensure your butter and sugar mixture forms a thick ribbon (like pale, fluffy paint) before adding dry ingredients.
If your oven runs hot, reduce the temperature to 340°F and check for doneness 5 minutes early. For extra moisture, brush the cooled layers with 1 tablespoon simple syrup (equal parts sugar and water, heated until dissolved) before adding buttercream.
Uneven Rise
Uneven rise often happens when pans aren’t level or the oven temperature fluctuates. Place pans on the middle rack of your oven and rotate them halfway through baking for even heat distribution.
If your oven has hot spots, use an oven thermometer to confirm the actual temperature—many home ovens run 25°F hotter than set. For a foolproof fix, bake one layer at a time if your oven struggles with even heat.
Buttercream Separating
Buttercream separates when fat and sugar aren’t fully emulsified. If this happens, place the bowl in an ice bath while whipping on high speed for 2-3 minutes to re-stabilize. For a quick fix, fold in 1 tablespoon of whipped cream to rebind the mixture.
To prevent this, always add powdered sugar gradually while mixing on medium speed, and avoid over-whipping the cream beyond stiff peaks. 🥄
Nutrition facts
Frequently asked questions
Why doesn't this recipe use eggs like traditional sponge cakes?
Anna Olson's method replaces eggs with whipped butter and heavy cream, creating air pockets that give the cake its signature lightness without adding moisture that could make it dense. The buttercream filling also helps bind the layers while keeping them tender. This approach yields a cake that's both egg-free and impossibly fluffy!
Can I make this cake in a 9-inch pan instead of 8-inch?
Yes, but you'll need to adjust the baking time. For a 9-inch pan, reduce the oven temperature to 340°F and bake for 18-20 minutes instead of 20-25 minutes. The layers will be slightly thinner, but the texture remains the same. Just be sure to use parchment paper for easy release!
How do I store leftovers to keep them fresh?
Wrap individual layers tightly in plastic wrap and store them at room temperature for up to 2 days. The fully assembled cake keeps best refrigerated for 3 days or frozen for 1 month. For serving, bring it to room temperature for 30 minutes before slicing to maintain that perfect texture.
Can I substitute vanilla extract with vanilla bean paste?
You can use either, but they serve different purposes. The recipe calls for both 1 tbsp extract and 1 tsp paste to balance flavor and aroma. If you only have extract, use 2 tbsp total for the same effect. For paste, if you only have extract, the cake will still taste delicious—just slightly less complex!
What's the best way to slice this cake for perfect layers?
Use a hot knife (dipped in hot water and wiped dry) for clean, professional-looking slices. Always slice between the layers to avoid tearing. For the cleanest cuts, chill the cake for 1-2 hours before serving. The layers should separate effortlessly with minimal crumbling!