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Lawrence D. Smith

Classic Lemon Meringue Layer Cake

This Lemon Meringue Cake features two layers of tender lemon sponge filled with tangy lemon curd and silky Swiss meringue buttercream.
Finished with toasted meringue swirls and fresh lemon zest, it combines bright citrus flavor, creamy richness, and a delicate, cloud-like topping in an elegant celebration cake.
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Prep Time 2 hours
Cook Time 45 minutes
Total Time 2 hours 45 minutes
Servings: 10
Course: Dessert
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Lemon Sponge Cakes
  • - 350 g margarine or unsalted butter Stork baking spread is the source's preferred option
  • - 350 g white caster sugar
  • - 4 large eggs at room temperature (or 6 medium eggs)
  • - 350 g self-raising flour
  • - 1 teaspoon baking powder
  • - 3 tablespoons milk
  • - 1 lemon zest and juice
For the Lemon Curd Filling
  • - 4 tablespoons lemon curd either shop-bought or homemade
For the Swiss Meringue Buttercream
  • - 5 large eggs at room temperature (whites and yolks separated)
  • - 340 g granulated sugar
  • - 150 g unsalted butter softened until a finger leaves an indent but not so soft that it begins to melt
  • - 1 teaspoon vanilla extract
  • - ¼ teaspoon salt
For Decoration
  • - 1 lemon zest only

Equipment

  • Two 8-inch round cake tins
  • Baking paper
  • Large mixing bowl or stand mixer bowl
  • Stand mixer with whisk and paddle attachments
  • Electric mixer (if not using a stand mixer)
  • Small saucepan
  • Heatproof mixing bowl
  • Whisk
  • Rubber spatula
  • Measuring spoons and kitchen scales
  • Zester or fine grater
  • Sharp knife for leveling the cakes
  • Cake stand or serving plate
  • Piping bag
  • Large star piping nozzle
  • Kitchen blowtorch

Method
 

Make the Lemon Sponge Cakes
  1. Prepare the Oven and Cake Tins: Preheat the oven to 160°C fan or 180°C conventional. Grease two 8-inch round cake tins and line their bases with baking paper.
  2. Cream the Butter and Sugar: Beat the margarine or unsalted butter with the caster sugar until the mixture becomes light and fluffy.
  3. Incorporate the Eggs: Add the eggs one at a time, beating after each addition. Add a spoonful of the flour alongside each egg to help prevent the mixture from curdling.
  4. Add the Flour and Milk: Add the self-raising flour, baking powder, and milk. Fold the ingredients together until combined.
  5. Mix in the Lemon: Add the zest and juice of one lemon. Fold gently until you have a smooth, evenly mixed cake batter.
  6. Divide the Batter: Distribute the batter evenly between the two prepared cake tins and smooth the surfaces.
  7. Bake the Sponge Layers: Place the tins on the middle shelf of the oven and bake for 35–45 minutes.
    The cakes should rise, turn golden, and spring back when gently pressed in the center. Check from 35 minutes if your oven runs hot. Leave the cakes to cool completely in their tins.
Prepare the Swiss Meringue Buttercream
  1. Separate the Eggs: Separate the five eggs, placing the whites in a clean stand mixer bowl and keeping the yolks separate. Ensure no yolk gets into the whites, as this can prevent the meringue from reaching stiff peaks.
  2. Combine the Egg Whites and Sugar: Add the granulated sugar to the egg whites and whisk until combined.
  3. Heat the Meringue Mixture: Set the mixing bowl over a small saucepan containing about 1 inch of simmering water over medium heat. Make sure the bottom of the bowl does not touch the water.
    Whisk continuously for approximately 5–10 minutes, until the sugar has completely dissolved, the mixture looks white and foamy, and it no longer feels grainy when rubbed carefully between your thumb and finger.
  4. Whip to Stiff Peaks: Fit the bowl onto the stand mixer with the whisk attachment. Whisk on medium-high speed for approximately 10–15 minutes, until the meringue is glossy and forms stiff peaks that stand upright without curling over.
    The meringue and the bottom of the bowl should no longer feel warm. If they remain warm, refrigerate the bowl for 10 minutes before continuing.
  5. Reserve the Piping Meringue: Transfer approximately half of the whipped meringue into a piping bag fitted with a large star nozzle. Set it aside for decorating the cake later.
  6. Add the Butter: Replace the whisk attachment with the paddle attachment. Set the mixer to medium-low speed, cut the softened butter into chunks, and add them gradually. Allow each addition to incorporate fully before adding the next.
  7. Finish the Buttercream: Reduce the mixer to a slow speed and add the vanilla extract and salt. Mix until the buttercream becomes thick, creamy, and silky smooth.
Assemble and Decorate the Cake
  1. Level the Cake Layers: Once the sponges have cooled completely, use a sharp knife to trim any domed tops, creating flat, level layers.
  2. Fill the First Layer: Place one sponge layer on a cake stand or serving plate. Spread a layer of Swiss meringue buttercream over the top. Pipe two concentric rings of buttercream around the outer edge, then spoon the lemon curd into the center.
  3. Add the Second Layer: Turn the second sponge upside down and carefully place it over the filling so the flat side faces upward.
  4. Frost the Top: Spread another layer of Swiss meringue buttercream over the top of the assembled cake.
  5. Add Fresh Lemon Zest: Finely zest the remaining lemon over the buttercream-covered top.
  6. Pipe the Meringue Swirls: Using the reserved meringue in the prepared piping bag, pipe decorative swirls around the outside of the cake.
  7. Toast the Meringue: Lightly brown the piped meringue with a kitchen blowtorch, taking care not to melt the buttercream beneath it.
  8. Serve or Store: Serve the cake once decorated, or keep it in a covered container in the refrigerator for up to 4 days.

Notes

  • Room-temperature eggs: Use room-temperature eggs for the sponge and buttercream preparation as specified. This helps the ingredients combine more smoothly.
  • Prevent curdling: When making the sponge batter, add a small spoonful of flour with each egg to help keep the mixture smooth.
  • Check the baking time: Start checking the sponge after 35 minutes. Depending on your oven, baking may take up to 45 minutes. If you use cake strips, the cakes may need closer to 45 minutes.
  • Cool the cakes completely: Allow both sponge layers to cool fully in their tins before assembling to prevent the buttercream from softening.
  • Keep egg whites free of yolk: Separate each egg into a spare bowl before adding its white to the mixing bowl. Even a small amount of yolk can interfere with whipping.
  • Check the sugar carefully: The Swiss meringue mixture should feel completely smooth rather than grainy before whipping it to stiff peaks.
  • Troubleshoot thin buttercream: If the buttercream looks thin or soupy, refrigerate the bowl for 30 minutes to firm up the butter, then beat slowly until thick. Repeat if necessary.
  • Fix curdled buttercream: If the buttercream looks split, place the bowl over a pan of gently simmering water for a few minutes until the mixture softens slightly around the edges. Return it to the mixer and beat slowly until smooth, repeating if needed.
  • Toast gently: Use the blowtorch carefully, browning the meringue swirls without melting the buttercream.
  • Refrigerate leftovers: Store the cake in a covered container in the refrigerator for up to 4 days.