Image credit: Sarah Quigley

Breaching the Finger Biscuit Fortress

This week I baked a cake, a terrible, wonderful cake - a cake so deliciously decadent it re-aligned my concept of decadence. I may forget everything else about this week, in fact I think I already have - but this cake has left its mark, and it’s in indelible chocolate.

Consider the cake in question: two tiers of chocolate bliss, filled with a thick layer of chocolate buttercream icing, topped with a fudgy dark chocolate glaze, surrounded by a palisade of dark, milk and white chocolate finger biscuits. When marking those really big moments in life, like turning twenty seven and nine sixteenths, or second breakfast, or Friday, or waking up to another day on this big watery planet, consider this cake.

One of the finer things about adulthood is discovering the endless selection of terrible, wonderful decisions that suddenly no one can tell you not to make. And then making them…

Or baking them, as the case may be.

Chocolate Celebration Cake with Finger Biscuits

Preparation time: 40 - 50 minutes + several hours cooling time Cooking time: 25 - 30 minutes Yield: 12 - 16 slices

Cake and buttercream icing recipes from Abby Mandel's Cuisinart Classroom, an innovative (but unfortunately out of print) cookbook for food processor lovers. Chocolate glaze from Green and Black's Chocolate Recipes.

My preferred technique for preparing this cake is the food processor method. This method is quick, easy and produces exceptionally light, moist cakes. I have included instructions for both food processor and conventional preparation methods below.

Finger biscuits are a Cadbury's biscuit popular in the British isles.


Chocolate Cake
  • 225 g flour
  • 1 tbsp double acting baking powder
  • ½ tsp baking soda
  • ½ tsp salt
  • 400 g (2 cups, 14 oz) golden caster sugar
  • 2 large eggs, at room temperature
  • 115g (4 oz, 1 stick) unsalted butter, at room temperature, cut into cubes
  • 70 g (½ cup + 2 tbsp)cocoa powder
  • ½ cup (120ml) buttermilk
  • 1 cup (240 ml) water
  • 2 tsp natural vanilla extract
Chocolate Buttercream Icing
  • 170 g (1½ cups, 6 oz) powdered sugar
  • 2 tbsp cocoa powder
  • 35 g (1⅙ oz, 2½ tbsp) unsalted butter, at room temperature
  • 2 - 3 tbsp sour cream
  • 3 tsp natural vanilla extract
  • Pinch of salt
Dark Chocolate Glaze
  • 100 g dark (min. 70% cocoa solids) chocolate
  • 50 g unsalted butter
Decoration (Optional, but Pretty)
  • 1 pack each of Cadbury's dark, milk and white chocolate finger biscuits
  • 20 - 30 g finely chopped chocolate (I used white)


Before Preparing the Cake
  1. Preheat oven to 175ºC (350ºF).
  2. Butter two 23 cm (9 inch) round pans. Line the base of each pan with baking paper, butter the paper and, finally, flour the pans.
Prepare the Cake Batter (Food Processor Method)
  1. In a large measuring jug, combine cocoa powder, buttermilk, water and vanilla extract, and set aside.
  2. Measure flour, baking powder, baking soda and salt into the food processor bowl, and process for 2 seconds. Set this mixture aside for later use.
  3. Place sugar and eggs in the food processor bowl, and process for 1 minute, stopping once in the middle to scrape down the bowl.
  4. Add butter to the processor bowl, and process for another minute, again stopping in the middle to scrape down the bowl.
  5. With the machine running, slowly pour the reserved buttermilk mixture through the machine's feed tube, and process for another 20 seconds.
  6. Scrape down the sides of the bowl, and add the reserved flour mixture.
  7. Mix the flour mixture into the batter by pulsing the machine 5 - 6 times (or until the flour has just disappeared), stopping to scrape down the bowl before the final pulse. Do not over-process the batter at this point.
Prepare the Cake Batter (Conventional Method)
  1. Measure dry ingredients (flour, cocoa powder, baking powder, baking soda and salt) into a bowl, mix and set aside.
  2. In a large bowl, cream together butter and sugar. Beat in eggs one at a time.
  3. In a large measuring jug, combine buttermilk, water and vanilla extract. Beat into the butter, sugar and egg mixture.
  4. Finally, stir dry ingredients into the mixture until they have disappeared. Avoid overmixing at this stage.
Bake the Cake
  1. Divide the batter evenly between the two prepared pans, and bake for 25 to 30 minutes (or until a toothpick inserted into cake's centre comes out clean).
  2. Cool the cakes for 5 minutes in the pan, then invert them on to wire racks, removing them from their pans. Allow the cakes to cool completely before decorating.
  3. Once the cake has cooled...
Prepare the Buttercream Icing
  1. Measure icing sugar, cocoa powder and salt into the food processor bowl and process for 5 seconds.
  2. Add butter, vanilla and 2 tbsp sour cream and process until smooth.
  3. If you prefer a softer creamier frosting (as I do for this cake), the remaining sour cream can be added to adjust the consistency of the icing.
Prepare the Glaze
  1. In a heatproof bowl over a pot of simmering water, melt the butter and chocolate, and stir them together.
Assemble the Cake
  1. Place the first layer of cake on your favourite cake platter.
  2. Spread the buttercream icing evenly over the top of this layer, and gently place the second layer on top.
  3. Pour the chocolate glaze over the cake. Using a metal spatula, butter knife or back of a spoon, smooth it thickly over the top of the cake.
To Decorate
  1. To decorate with finger biscuits, smooth a thin layer of glaze over the sides of the cake. Before this sets, press finger biscuits gently around the cake, alternating between dark, milk and white chocolate fingers.
  2. If omitting the finger biscuits, glaze the top of the cake only, or prepare extra glaze the sides of the cake (2.5 - 3 times the given recipe).
  3. If you wish, garnish top of cake with chopped chocolate and / or small chunks of leftover finger biscuits.


Simplify: This chocolate cake recipe is delicious enough to stand on its own (without icing and glaze) as a simple dessert. Halve the cake recipe to make a single round layer. Once baked, dust the cake with a little icing sugar and serve with ice cream or lightly sweetened whipped cream.

Buttercream it: For a sweeter, less sophisticated cake, forget the glaze and finger biscuits. Instead, double the amount of buttercream icing and use it to ice the top (and sides if you wish) of the cake. Great for kids!

For parties: Bake the cake as a single 32.5 x 23 cm (9 x 13 inches) baking pan. Keep the cake as a single layer, and ice the top of the cake with a double recipe of chocolate buttercream icing. Cut the cake into cubes and share!

Adventure: Find alternative decorations for the top and sides of your cake!

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