Sugar-Free White Cake with Fluffy Frosting Step-by-step instructions

Before you start

Before starting, gather all your equipment and ensure your mixing bowl and whisk attachment are completely clean and free of any grease. Lightly wipe them with a paper towel dipped in lemon juice or white vinegar to remove residual oils.

Separate your eggs carefully while they are cold, ensuring no yolk slips into the whites, and let the whites sit on the counter to reach room temperature before whipping.

Instructions

Preparing the Cake Layers

1. 1Prepare the Cake Layers
   Place the pre-made delicate white sponge layers on a clean work surface. If the tops are domed, use a long serrated knife to gently level them so they sit perfectly flat and even during assembly.
   Look for The layers should be flat and even.
   Tip Keep the cake layers at room temperature for easier handling.

At the end of this first phase, your cake layers should be perfectly leveled and ready for assembly. They should feel soft, springy, and completely cool to the touch. Having flat, even surfaces is crucial for ensuring the cake stands straight and stable once the frosting is applied, preventing any sliding or tilting during the decorating process.

Whipping the Glossy Meringue Frosting

2. 2Combine Egg Whites and Sweetener
   In a thoroughly cleaned stand mixer bowl, combine the egg whites and sugar-free sweetener. Set the bowl over a saucepan of simmering water, ensuring the bottom of the bowl does not touch the water, and whisk constantly until the sweetener is completely dissolved and the mixture reaches a safe temperature of 160°F (71°C).
   Look for The mixture should feel smooth and reach 160°F (71°C).
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Ensure the bowl is completely grease-free before starting.
3. 3Whip the Meringue to Stiff Peaks
   Transfer the bowl to the stand mixer fitted with the whisk attachment. Whip the mixture on high speed for about 10 minutes until it cools completely and forms stiff, glossy, billowy peaks that hold their shape perfectly.
   Look for The meringue should hold sharp, glossy peaks.
   Tip A pinch of cream of tartar can help stabilize the meringue.

By the completion of the second phase, the frosting will transform into a magnificent, billowy masterpiece. The meringue should be incredibly glossy, holding stiff, sharp peaks that do not droop when you lift the whisk.

It should have a clean, white color and a velvety texture that is ready to coat your cake beautifully, looking exceptionally light and airy.

Assembling and Decorating the Cake

4. 4Layer and Frost the Cake
   Place the first white sponge layer on a serving plate. Spread a generous layer of the whipped glossy frosting smoothly over the top using an offset spatula, ensuring an even thickness across the entire surface.
   Look for The frosting layer should be flat and even.
   Tip Use a rotating cake stand to make spreading easier.
5. 5Apply the Exterior Frosting
   Gently place the second sponge layer on top. Spread the remaining billowy white frosting evenly over the top and sides of the cake, using your spatula to create beautiful, decorative swirls and a pristine finish.
   Look for The cake should be fully covered in billowy swirls.
   Tip Wipe the spatula clean frequently for a neater look.
6. 6Slice and Serve
   Slice the finished sugar-free white cake using a warm, sharp knife to ensure clean cuts. Serve each slice on a dessert plate, showcasing the ultra-fluffy texture and the delicate layers of sponge and frosting.
   Look for Each slice should show clean, distinct layers.
   Tip Dip the knife in hot water and wipe dry between slices.

At the final checkpoint, your assembled cake should stand tall and proud, showcasing clean, even layers of sponge and frosting. The exterior should be smoothly coated in the pristine white meringue, with decorative billows according to your preference.

When sliced, each piece should reveal distinct, delicate white layers separated by a uniform layer of frosting, looking exceptionally neat and professional.

Common mistakes

One common mistake is using a mixing bowl that has traces of grease, which prevents the egg whites from whipping to their full volume.

Another error is attempting to frost cake layers that are still warm, which will cause the delicate meringue frosting to melt and slide off. Finally, rushing the whipping process can result in a runny frosting that does not hold its beautiful, billowy shape.

How to tell it’s done

To tell when the cake is ready, ensure the layers are evenly assembled and the frosting holds its billowy shape. The egg whites in the frosting must be heated to a safe internal temperature of 160°F (71°C) during the whisking phase over simmering water to ensure they are fully cooked and safe to consume.

• Egg dishes: 160°F (71°C) in the thickest part