Classic Ding Dong Sheet Cake with Creamy Filling Step-by-step instructions

Before you start

Before beginning the assembly, gather all components, ensuring the cake layers are fully baked and cooled. Have the whipped cream chilled and the ganache prepared to a spreadable consistency.

Clear a flat workspace and ensure the cake pan or serving board is ready to receive the finished product, as moving the cake once assembled can be difficult.

Instructions

Layering the sponge

1. 1Prepare the layers
   Place one layer of the pre-baked chocolate cake onto a clean work surface. Ensure the cake is completely cooled before proceeding to prevent the filling from melting.
   Look for The cake surface should feel cool and firm to the touch.
   Tip Use a serrated knife to level the top of the cake for an even surface.

The base layer should be level and stable on the board. Check that the cake is completely cool to the touch, as any warmth will cause the cream filling to lose its structure or melt entirely, ruining the visual appeal of the final dessert.

Piping the cream

2. 2Fill the cake
   Pipe a generous, even layer of whipped cream over the first cake layer using a piping bag. Carefully place the second cake layer on top, pressing down lightly to secure the filling.
   Look for The cream should reach the edges of the cake without spilling over.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Chill the filled cake for 15 minutes to set the cream before adding the ganache.

The cream should be piped evenly to the edges to ensure every bite has the right amount of filling. Confirm the layer is consistent in thickness, which is vital for a flat, even top layer that will eventually support the weight of the chocolate ganache glaze.

Applying the ganache

3. 3Finish with ganache
   Spread the chocolate ganache over the top of the cake using an offset spatula. Smooth it into an even, glossy layer, allowing it to drip slightly down the sides if desired.
   Look for The ganache should be smooth and shiny, covering the entire top surface.
   Tip Run the spatula under hot water and wipe dry for a perfectly smooth finish.

The ganache should be perfectly smooth and mirror-like. Check that the edges are covered uniformly and that no crumbs from the cake are visible in the glaze.

The cake should now look like a solid, professional square ready for the final chilling stage before slicing.

Common mistakes

Avoid spreading the ganache while the cake layers are still warm, as this will cause the cream filling to melt and slide. Another common error is using a ganache that is too thick, which can tear the surface of the cake when you attempt to spread it.

Always ensure the ganache is smooth and at room temperature before application to guarantee a professional, glossy finish.

How to tell it’s done

The cake is considered done when the ganache has set to a firm, non-sticky finish and the cream filling is stable enough to hold the weight of the top layer.

When slicing, the knife should pass through the layers cleanly without dragging, indicating the structure is set properly. The internal temperature of the egg-containing filling must reach 160°F (71°C) if prepared from scratch.

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