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Desserts · Part 2 of 3: Instructions

Rich and Fudgy Matilda Chocolate Cake Step-by-step instructions

A slice of decadent Matilda chocolate cake with glossy fudge frosting on a white plate.
Prep
Cook
Total
Serves
12
Includes 1 h resting

Before you start

Before beginning the assembly, ensure the work surface is clean and clear of clutter. Take the cake sponges and the fudge frosting out of the refrigerator at least 30 minutes before use to bring them to a workable room temperature.

Prepare the offset spatula, a serrated knife, and a cake stand or serving platter. Ensure there is enough space in the refrigerator to chill the finished cake, which is a crucial step for setting the frosting and ensuring clean, beautiful slices for serving.

Ingredients at a glance (2)
  • 2 layers chocolate cake sponges, store-bought or made ahead
  • 2 cups chocolate fudge frosting, store-bought or made ahead

Instructions

Building the foundation

  1. Prepare the cake structure
    Place the first chocolate cake layer on a stable serving platter or a decorative cake stand. Use an offset spatula to spread an even layer of the rich chocolate fudge frosting over the top surface, ensuring it reaches the edges for a clean, professional look.
    Look for The frosting should be spread into a smooth, even layer across the entire surface of the cake sponge.
    Tip Keep the cake sponge at room temperature to ensure the frosting spreads easily without tearing the delicate crumb of the cake.

At the end of this phase, the first layer of cake should be securely centered on the stand with a perfectly smooth, even layer of frosting on top. The frosting should reach the edges, creating a level surface that will support the second layer without any bulging or unevenness. Ensure the base layer is firmly stuck to the plate so it does not shift during the subsequent steps of the assembly process.

Applying the final coat

  1. Assemble and frost
    Carefully stack the second cake layer on top of the frosted first layer. Apply the remaining chocolate fudge frosting generously over the top and down the sides of the cake. Use the offset spatula to create a smooth finish, covering any gaps between the layers for a uniform, decadent appearance.
    Look for The final coat of frosting should appear glossy and smooth, completely encasing the sponge layers.
    Tip If the frosting feels too stiff, briefly warm the bowl over a pot of simmering water to restore its spreadable, glossy consistency.

The cake should now be fully encased in a thick, glossy layer of fudge frosting. The sides and top should be uniform, with no visible gaps or uneven patches of sponge showing through. The finish should look professional, with sharp, clean lines at the edges. Check that the frosting is smooth and free of air bubbles or crumbs that may have been dragged up during the application process.

Setting and slicing

  1. Slice and serve
    Allow the frosted cake to set in a cool place for at least one hour before slicing. Ensure the internal temperature of the cake reaches 160°F (71°C) if using a custard-based frosting containing eggs. Use a warm, clean serrated knife to cut through the cake, ensuring the layers stay intact. Serve each slice immediately on a chilled plate with a fork to enjoy the moist texture and deep chocolate flavor.
    Look for The frosting should be firm enough to hold its shape when the knife passes through the layers.
    Safe temperature 160°F (71°C) internal temperature (egg dishes)
    Tip Dip the knife into hot water and wipe it dry between each cut to achieve perfect, clean slices every time.

After resting in the refrigerator, the cake should feel firm and cool. The frosting will have set, making it easy to slice without smearing. When cutting, the slices should remain intact, showing distinct, clean layers of cake and frosting.

Ensure the knife is wiped clean after each slice to maintain the presentation of the remaining cake, and serve immediately on a plate to enjoy the optimal texture and flavor.

Common mistakes

Avoid applying frosting while the cake layers are still warm, as this will cause the frosting to melt and slide off the sides, ruining the presentation. Another common mistake is neglecting to chill the cake between the crumb coat and the final layer of frosting.

Always take the time to let the cake set in the refrigerator; this simple patience prevents the layers from shifting and ensures a professional, polished finish that is essential for this style of cake.

How to tell it’s done

The cake is ready when the frosting is set and firm to the touch after chilling. The structure should feel stable, and the layers should not slide when pressure is applied. When slicing, the knife should glide through the cake with minimal resistance.

Because this recipe uses pre-prepared sponges, there is no internal cooking temperature to reach for the cake; simply focus on the visual cues of a smooth, glossy, and set exterior that holds its shape perfectly at room temperature.

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

Coming up in Part 3: common questions

  • Can this cake be made ahead of time?
  • Why is the frosting sliding off the cake?
  • How can perfect, clean slices be achieved?

Also in Part 3: variations (Mocha Matilda Cake, Salted Caramel Layer), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)