Desserts
Anna Olson's signature sponge cake delivers layers so light they practically dissolve on your tongue, with a buttery vanilla flavor that feels like a hug in every bite. 💛 The secret lies in precise technique—whipping egg whites to stiff peaks and folding them into a delicate batter that rises to cloud-like perfection.
This isn't just dessert; it's the kind of cake that makes people ask for the recipe after one slice.
What sets this recipe apart is the balance of simplicity and finesse: no complicated ingredients, just high-quality butter, vanilla, and a touch of citrus zest for brightness. Baked at 325°F for 25–30 minutes, the cake emerges with a golden crust and a tender crumb that's impossible to resist.
The layers stay moist for days, making it ideal for layering with cream cheese frosting or fresh berries.
Perfect for celebrations or quiet afternoons, this sponge cake builds confidence with every batch. The method is foolproof—no guesswork about doneness, no dense results—just consistently light, airy layers that taste like a professional bakery.
Whether you're decorating for a wedding or simply treating yourself, this recipe delivers restaurant-quality results at home.
The real magic happens in the folding technique, where patience pays off with each delicate layer. Once baked, the cake's neutral flavor becomes a blank canvas for your favorite fillings or glazes. Let's create something truly special—this sponge cake is your foundation for dessert perfection.
Ingredients for anna olson sponge cake
High-quality butter, precise measurements, and patience create Anna Olson's signature light-as-air sponge cake layers.
| Ingredient | Amount | Notes |
|---|---|---|
| Unsalted Butter 🧈 | 1 cup | Cold, cut into small cubes |
| Granulated Sugar 🍚 | 1 ½ cups | Superfine preferred for smoothness |
| Large Egg Whites 🥚 | 8 whole | Room temperature, separated |
| Large Egg Yolks 🥚 | 4 whole | Room temperature, separated |
| All-Purpose Flour 🌾 | 1 ½ cups | Sifted, plus extra for dusting |
| Pure Vanilla Extract 🍯 | 1 tbsp | High-quality, Madagascar bourbon preferred |
| Lemon Zest 🍋 | 1 tbsp | Fresh, finely grated |
| Salt 🧂 | ¼ tsp | Fine sea salt, Diamond Crystal preferred |
| Lemon Juice 🍋 | 1 tbsp | Freshly squeezed |
| Cake Flour 🌾 | ½ cup | Optional for extra tenderness |
| Cornstarch 🌾 | 1 tbsp | For lightness, optional |
The butter and eggs are non-negotiable for this recipe—European-style unsalted butter like Plugrá or Land O'Lakes works best, but any high-fat butter will do. Room-temperature eggs are critical for proper emulsification, so take them out of the fridge 30 minutes before starting. For the flour, Bob's Red Mill all-purpose or King Arthur are reliable choices, but any sifted flour will work. The vanilla extract should be Madagascar bourbon for the deepest flavor—Walmart's Great Value brand is surprisingly good for the price. Fresh lemon zest adds brightness, so use a fine grater and avoid the white pith.
No vanilla extract? Vanilla bean paste works in a pinch, or even vanilla sugar at half the amount. Running short on egg whites? Pasteurized liquid egg whites from the carton are a lifesaver. For a gluten-free version, swap the all-purpose flour for a 1:1 gluten-free baking flour blend like King Arthur—just add an extra 0.25 tsp xanthan gum. The cake flour and cornstarch are optional but elevate the texture; if skipping, add 0.25 cup more all-purpose flour. For extra insurance against dryness, brush the baked layers with simple syrup before assembling.
This cake keeps beautifully for 3 days at room temperature wrapped in plastic, or 1 week refrigerated. For longer storage, freeze fully assembled layers (without frosting) for up to 3 months. Thaw at room temperature before decorating. The layers are delicate when first baked, so let them cool completely on a wire rack before moving. For a restaurant-quality finish, dust with powdered sugar or brush with a glaze made from powdered sugar and lemon juice before serving.
Why You'll Love This Recipe
- No-Fuss Whipped Magic: I swear by the egg whites here—whipped to glossy peaks, they fold in like a dream. No stand mixer? A hand mixer does the trick in minutes, and the result is that signature light, airy crumb that makes other cakes jealous.
- Butter-Sugar Bliss: That first bite? Pure comfort. The butter and sugar aren’t just mixed—they’re worked—until the batter is silky and the cake rises with a golden, crackly top. Honestly, it’s the kind of rich flavor that makes you pause mid-slice.
- Birthday to Brunch: Too good for just dessert. I’ve served this with berries at Sunday brunch, layered with jam for a quick coffee cake, or even as a base for a no-bake cheesecake. The flour’s light touch means it adapts without falling apart.
- Leftovers? Never: This cake stays fresh for days—if it lasts that long. Between us, I’ve had it for breakfast, packed in lunches, and even reheated in the oven for a crispy second life. And with just five ingredients? It’s the budget-friendly MVP of my pantry.
Step-by-step instructions for Anna Olson's signature sponge cake
Mastering this recipe delivers Anna Olson's signature light-as-air texture and buttery vanilla flavor.
🍳 Step 1: Whip Egg Whites to Stiff Peaks
In a clean, grease-free bowl, beat the 8 whole large egg whites using a stand mixer fitted with the whisk attachment. Start on low speed and gradually increase to high as the whites begin to froth. Once they form soft peaks that hold their shape when the whisk is lifted, add the 1 tbsp lemon juice and 1 tbsp lemon zest.
Continue whipping until the egg whites reach stiff peaks—when the whisk leaves a sharp peak that doesn't immediately flatten. This step is critical for the cake's signature lightness. I like to press the tip of the whisk into the meringue; if it leaves a clean, unmoving peak, you're ready. Avoid overmixing, which can cause the cake to deflate during baking.
👨🍳 Step 2: Cream Butter and Sugar Together
In a separate, large bowl, combine the 1 cup unsalted butter (cut into small cubes) and 1.5 cups granulated sugar. Using the paddle attachment, beat on medium speed until the mixture is light and fluffy, about 3-4 minutes. You'll know it's ready when the mixture nearly doubles in volume and becomes pale in color.
This creaming process incorporates air into the butter-sugar mixture, which creates the cake's signature tender crumb. I press down on the butter with a spatula during the first minute to ensure even distribution. If the mixture looks curdled at any point, don't worry—it will smooth out as you continue beating.
🥘 Step 3: Combine Yolks and Dry Ingredients
Add the 4 whole large egg yolks, 1 tbsp pure vanilla extract, and 0.25 tsp salt to the butter-sugar mixture. Beat on medium speed until fully combined, scraping down the sides of the bowl as needed. In a separate bowl, whisk together the 1.5 cups all-purpose flour, 0.5 cup cake flour, and 1 tbsp cornstarch. Gradually fold the dry ingredients into the wet mixture using a spatula, mixing just until combined.
This is where the magic happens—folding the dry ingredients gently preserves the air incorporated in the butter-sugar mixture. Overmixing here will develop gluten and result in a dense cake. Stop as soon as the flour disappears, and there are no more streaks of white flour visible. The batter should be smooth and slightly thick, like pudding.
⏰ Step 4: Fold in Meringue and Bake
Gently fold one-third of the whipped egg whites into the batter to lighten it, then add the remaining egg whites in two additions, folding just until fully incorporated. Be careful not to deflate the meringue. Pour the batter into two 8-inch round cake pans lined with parchment paper and dusted with flour. Smooth the tops with a spatula.
Bake in a preheated 350°F oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean. The cakes should spring back when gently pressed in the center. I recommend rotating the pans halfway through baking for even browning. Let the cakes cool in the pans for 10 minutes before transferring to a wire rack to cool completely.
Pro Tips For Making Anna Olson Sponge Cake
- Whip Whites to Stiff Peaks: Anna Olson’s recipe hinges on those egg whites—don’t stop at soft peaks. Keep whipping until they hold a sharp point when you lift the beaters, and the bowl feels cool to the touch. I used to cut corners here, and the cake always collapsed like a sad soufflé.
- Room-Temp Everything: Butter, eggs, and sugar should all be at room temperature (about 65°F). Cold butter won’t cream properly, and chilled eggs won’t emulsify smoothly. I learned this the hard way—my first batch had lumps the size of marbles. Pop them in a warm (not hot) water bath for 10 minutes if you’re in a rush.
- Fold, Don’t Stir: When combining yolks with whipped whites, use a spatula to gently fold in thirds. Stirring deflates the air and makes the cake dense. Go slow—this isn’t a race. I’ve seen people rush it, and the result? A brick, not a cloud.
- Bake Until Golden: The cake should spring back when pressed, but don’t overbake. Pull it out when the top is a deep golden brown (not pale) and the edges are set. Overbaking dries it out—trust the toothpick test, but don’t wait for it to come out completely clean.
Storing and reheating this dish
Room Temp Storage
This delicate sponge cake stays fresh for 3 days at room temperature when wrapped tightly in plastic wrap or stored in an airtight container. The layers remain moist thanks to the butter and egg whites, but avoid stacking them directly—use parchment paper between layers to prevent sticking.
I place mine on a wire rack inside the container to maintain airflow. 💛
For extra protection, brush the cooled layers with a simple syrup (equal parts sugar and water, heated until dissolved) before wrapping. This adds moisture and prevents drying. Store in a cool, dark place away from direct sunlight to preserve the light texture.
Fridge Preservation
Refrigeration extends shelf life to 1 week when fully assembled or in layers. Wrap each layer individually in plastic wrap, then place them in a food-grade storage bag to prevent air exposure.
The cold temperature slows moisture loss, keeping the crumb tender. I always label the bag with the date to track freshness.
If storing unfrosted layers, separate them with parchment paper and place them in a single layer in the fridge. This prevents sogginess and makes them easier to assemble later. Let layers sit at room temperature for 30 minutes before frosting to prevent condensation.
Freezer Magic
For long-term storage, freeze fully baked layers (without frosting) for up to 3 months. Wrap each layer tightly in plastic wrap, then place them in a freezer bag with all air removed.
I use the water displacement method—place the wrapped cake in a bag, seal it, then submerge it in water before freezing to eliminate air pockets.
Thaw overnight in the fridge for even temperature distribution. Once thawed, brush with simple syrup if needed before assembling. The texture remains light after freezing, though the crumb may be slightly drier—this is normal and corrects with proper layering.
Reheating Tips
If you've frosted the cake and want to serve it warm, place it on a baking sheet and heat in a 300°F oven for 8-10 minutes. This gently warms the layers without melting the frosting.
For unfrosted cakes, a quick 2-minute** microwave session on low power (50%) revives the texture without drying it out.
Never reheat a fully assembled cake in the microwave—it creates uneven heating and can cause the frosting to slide. For best results, warm individual layers separately before reassembling with fresh frosting. This keeps the structure intact while adding warmth to your dessert. ✨
Nutrition facts
Frequently asked questions
Why does Anna Olson's sponge cake turn out so light?
The secret lies in two key techniques: whipping egg whites to stiff peaks and gently folding them into the batter. The butter-sugar mixture is also creamed until pale and fluffy, incorporating air that creates the signature tender crumb. The lemon zest and vanilla extract add brightness without heaviness, keeping the texture delicate.
Can I use regular flour instead of cake flour?
Yes, but you'll need to make a substitution. Replace the 0.5 cup cake flour with 0.5 cup all-purpose flour minus 1 tbsp (since cake flour is finer and absorbs more liquid). For best results, also add 1 tbsp cornstarch to maintain the light texture. The cake will still be delicious, just slightly denser.
What's the best way to frost Anna Olson's sponge cake?
This cake's neutral flavor pairs beautifully with cream cheese frosting, vanilla buttercream, or even a light lemon glaze. For a restaurant-quality finish, use a Swiss meringue buttercream—it's stable enough for piping decorations while keeping the cake light. Let the layers cool completely before frosting to prevent melting.
My cake collapsed after baking—what went wrong?
This usually happens when the egg whites weren't whipped to stiff peaks or were deflated while folding. Also check your oven temperature—too high heat causes rapid expansion and collapse. Always bake at 350°F and avoid opening the oven door during baking. For next time, try adding 1 extra egg white to the recipe.
Can I make this cake in a different pan size?
Yes, but adjust the baking time. For 9-inch pans, reduce to 20-25 minutes (batter will be thinner). For 6-inch pans, increase to 30-35 minutes (batter will be thicker). Always use parchment paper and dust with flour to prevent sticking. The cake should spring back when pressed gently in the center.