Ingredients
For the Sponge Cake
- Large eggs (4) – Helps create a light and airy texture. Using room-temperature eggs results in better volume.
- Granulated sugar (1 cup) – Adds sweetness while contributing to the structure of the sponge.
- All-purpose flour (1 cup) – Provides stability to the cake. For an even softer texture, cake flour can be used instead.
- Baking powder (1 teaspoon) – Aids in slight rising, keeping the cake tender.
- Unsalted butter (¼ cup, melted) – Adds richness. For a dairy-free version, melted coconut oil can be used.
- Milk (¼ cup) – Helps maintain moisture in the cake. Dairy-free alternatives such as almond or oat milk work well.
- Vanilla extract (1 teaspoon) – Enhances the overall flavor profile.
Instructions
Preparing the Oven and Pan
Preheat the oven to 350°F (175°C). Line a jelly roll pan with parchment paper and lightly grease it with butter or non-stick spray. This ensures easy cake removal and prevents sticking. A jelly roll pan is a shallow, rimmed baking sheet measuring about 10×15 inches, ideal for creating thin sponge cakes.
Making the Sponge Batter
In a large mixing bowl, beat the eggs and sugar together for about five minutes until the mixture is pale, thick, and fluffy. This step incorporates air, which is essential for a light sponge cake.
Sift in the flour and baking powder and gently fold them into the egg mixture using a spatula. Folding instead of stirring helps maintain the airiness. Overmixing should be avoided, as it can deflate the batter and result in a dense cake.
Slowly fold in the melted butter, milk, and vanilla extract until just combined. Be careful not to overwork the batter.
Baking the Cake
Pour the batter evenly into the prepared jelly roll pan. Use a spatula to spread it into a uniform layer.
Bake for 10 to 12 minutes, or until the cake is lightly golden and springs back when gently pressed. If the cake is overbaked, it may become too dry and prone to cracking.
Rolling the Cake While Warm
Once the cake is baked, it must be rolled while still warm to maintain flexibility. Turn the warm cake onto a clean kitchen towel dusted with powdered sugar. Carefully peel off the parchment paper.
Starting from one short end, gently roll the cake with the towel, forming a spiral. Allow it to cool completely in this rolled shape. Rolling it while warm prevents cracks and ensures the cake holds its shape once filled.
Filling and Re-Rolling the Cake
Once the cake has completely cooled, carefully unroll it. Spread an even layer of lemon curd over the surface, followed by a layer of whipped cream. These fillings add a refreshing tanginess and a smooth, creamy texture.
Re-roll the cake tightly without applying too much pressure. Transfer it to a serving platter, seam side down.
Adding the Lemon Glaze
Drizzle the lemon glaze over the top for added sweetness and an extra burst of citrus flavor. If a homemade glaze is preferred, a simple version can be made by mixing powdered sugar with fresh lemon juice until smooth.
Notes
- Preventing Cracks: Rolling the cake while warm is the best way to avoid cracks. If cracks do appear, they can be concealed with additional whipped cream or glaze.
- Avoiding a Sticky Cake: Dusting the towel with powdered sugar prevents the cake from sticking when rolling.
- Creating a Fluffier Sponge: Beating the eggs and sugar properly is crucial. The mixture should be thick and pale before adding other ingredients.
- Storing the Cake: Leftovers should be stored in an airtight container in the refrigerator for up to three days. The cake can also be frozen without the glaze for up to one month.
- Prep Time: 20 minutes
- Cook Time: 12 minutes