This Black Forest gateau is a tall, dark chocolate sponge layered with softly whipped cream and sharp, glossy cherries, finished with chocolate curls and a deep cherry-red glaze that catches the light. It is the kind of dessert that looks far more difficult to make than it actually is, which makes it a reliable choice for birthdays, dinner parties, or any occasion that calls for something properly impressive. From start to finish, allow around 2 hours including cooling time.

This version keeps the method straightforward and the results consistent, using a cocoa-rich sponge that stays moist and does not crumble when sliced. The cream filling is lightly sweetened, which keeps the whole thing balanced rather than cloying.

Ingredients

For the chocolate sponge

175g self-raising flour
175g caster sugar
175g unsalted butter, softened
3 large eggs, at room temperature
40g cocoa powder, sifted
1 tsp baking powder
2 tbsp whole milk

For the cherry filling

1 x 400g tin of pitted morello cherries in syrup
2 tbsp cornflour
2 tbsp caster sugar
3 tbsp kirsch (optional)

For the cream layer

450ml double cream, cold
2 tbsp icing sugar, sifted
1 tsp vanilla extract

To finish

100g dark chocolate (at least 50% cocoa solids), for curls or grated
A small handful of fresh or drained tinned cherries, for decoration
1 tbsp icing sugar, for dusting

How to Make Mary Berry Black Forest Gateau Recipe

Prepare the tins: Grease and base-line two 20cm sandwich tins with baking parchment. Preheat the oven to 180°C (160°C fan/Gas 4) and position the shelves in the upper and lower thirds of the oven so both tins can bake evenly at the same time.
Make the sponge batter: Put the butter and caster sugar into a large bowl and beat together with an electric hand whisk for 3 to 4 minutes until the mixture is very pale and noticeably fluffy. Add the eggs one at a time, beating well after each addition. If the mixture starts to look as though it might curdle, add a tablespoon of the flour.
Fold in the dry ingredients: Sift the flour, cocoa powder, and baking powder into the bowl. Using a large metal spoon, fold everything together with gentle, sweeping strokes until no dry flour remains. Add the milk and fold again briefly, this gives the batter a dropping consistency that spreads evenly in the tin.
Bake the sponges: Divide the batter equally between the two prepared tins and smooth the tops with a palette knife. Bake for 22 to 25 minutes, or until the sponges have risen, feel springy to the touch at the centre, and a skewer inserted into the middle comes out clean. Leave in the tins for 5 minutes before turning out onto a wire rack to cool completely.
Prepare the cherry filling: Drain the tinned cherries over a jug, keeping all of the syrup. Pour 150ml of the cherry syrup into a small saucepan with the caster sugar and stir in the cornflour until smooth. Bring to the boil over a medium heat, stirring constantly, and cook for 1 to 2 minutes until the mixture is thick, glossy, and clear. Remove from the heat, stir in the kirsch if using, then fold in the drained cherries. Leave to cool completely before using.
Whip the cream: Pour the cold double cream into a large bowl, add the icing sugar and vanilla extract, and whisk with an electric hand whisk until the cream holds firm but silky peaks. Do not over-whisk or the texture will become grainy and difficult to spread.
Make chocolate curls: Using a sharp vegetable peeler, draw the blade along the flat side of the dark chocolate bar in slow, firm strokes to create small curls. Work over a plate or tray and keep the curls in a cool place until needed. Alternatively, grate the chocolate coarsely on a box grater for a simpler finish.
Assemble the gateau: Place one sponge layer on a flat serving plate or cake board. Spoon half the whipped cream onto the sponge and spread it to within 1cm of the edge. Spoon the cooled cherry filling over the cream, leaving a 2cm border around the outside so the filling does not overflow when the second layer is pressed down. Lay the second sponge on top and press lightly to settle it.
Decorate and finish: Spread the remaining cream smoothly over the top of the gateau. Scatter the chocolate curls generously over the cream, then arrange the whole cherries around the outer edge of the top. Dust very lightly with icing sugar just before serving.

Tips for the Best Mary Berry Black Forest Gateau

Why is my chocolate sponge dense instead of light?

Cocoa powder is heavier than plain flour, so the butter and sugar need to be beaten for the full 3 to 4 minutes until truly pale and airy before adding the eggs. Under-creaming at this stage is the most common cause of a heavy sponge.

Why does my cream filling slide out from between the layers?

The cream must be whipped to firm peaks before assembly, not just softly thickened. Whipped cream that is too loose will not support the weight of the second sponge and will push outward under pressure.

Why is my cherry filling watery and not setting properly?

The cornflour must be dissolved into the cold syrup before heating, and the mixture must reach a full boil and be stirred constantly for at least 1 minute. Removing the pan too early leaves the starch undercooked, which gives a runny, starchy-tasting result.

How do I stop the cream from melting when I decorate the gateau?

Make sure the sponges are completely cold before assembly. Even a slightly warm sponge will begin to soften and destabilise the cream. Chill the assembled gateau for 30 minutes before adding the final decoration, which helps everything set in place.

Why are my chocolate curls breaking into crumbs instead of curling?

The chocolate needs to be at room temperature to curl cleanly. If the bar is cold or has just come from the fridge, the chocolate will snap rather than peel. Leave it at room temperature for 15 to 20 minutes before peeling.

Serving Suggestions

Serve sliced at the table as the centrepiece of a birthday or dinner party dessert course, with no accompaniment needed.
Pair with a small glass of kirsch or a rich dark cherry juice for a grown-up serving occasion.
Cut into generous wedges and serve alongside a pot of strong black coffee to balance the sweetness of the cream.
Present on a dark cake stand lined with a circle of baking parchment for a clean, professional finish when serving guests.
Offer a small jug of single cream on the side for those who prefer a lighter accompaniment with each slice.

Storage

Room temperature

Once assembled and decorated, the gateau is not suitable for storing at room temperature due to the fresh cream filling; keep it refrigerated at all times.

Refrigerator

Cover the gateau loosely with clingfilm or place under a large cake dome and refrigerate for up to 2 days. Remove from the fridge 20 minutes before serving to allow the sponge to soften slightly and the flavours to come forward.

Freezing

The unassembled, unfilled sponge layers can be wrapped individually in clingfilm and then in foil and frozen for up to 2 months. Defrost the sponges at room temperature for 2 hours, then assemble and decorate with fresh cream and the cherry filling on the day of serving.

Nutrition

Calories: 520 kcal
Carbohydrates: 48g
Protein: 6g
Fat: 33g
Saturated Fat: 20g
Sodium: 160mg

Nutrition values are estimates based on one serving and may vary depending on the specific brands and ingredients used.

FAQs

Can I use fresh cherries instead of tinned morello cherries?

Yes, fresh dark cherries work well when they are in season. Pit them, then cook briefly in a small saucepan with 2 tablespoons of sugar and 3 tablespoons of water until softened, thicken with cornflour as described, and leave to cool before using. The flavour is slightly less sharp than morello but still very good.

Can I make the Black Forest gateau the day before serving?

The sponge layers and cherry filling can both be made the day before. Keep the sponges wrapped at room temperature and the filling covered in the fridge. Whip the cream and assemble the gateau on the day of serving for the best texture and appearance.

Can I leave out the kirsch if I am making this for children?

Absolutely, the kirsch is optional. Replace it with 1 teaspoon of almond extract stirred into the cherry filling, or simply leave it out entirely. The gateau is still rich and full-flavoured without it.

What size tin works best for this recipe?

Two 20cm round sandwich tins give the ideal ratio of sponge height to filling. Using tins any larger will produce very shallow, fragile layers that are difficult to handle during assembly without breaking.

Can I use a different type of cream for the filling?

Double cream is the correct choice here because it has a high enough fat content to whip to firm peaks and hold its shape once assembled. Whipping cream is a reasonable substitute but will be slightly less stable. Single cream, squirty cream, or spooning cream will not hold and should not be used.

Conclusion

The Mary Berry Black Forest gateau recipe brings together a tender cocoa sponge, a sharp and glossy cherry filling, and softly whipped cream in layers that look striking on any table. The method is methodical rather than complex, and each element can be prepared in stages, which makes the whole project far more manageable than the finished cake suggests. This recipe makes 8 to 10 generous slices, making it well suited to a family celebration or a dinner party where something truly memorable is required.

If you give this recipe a go, leave a comment below to share how it turned out. Sharing the recipe with a friend who loves classic baking is always appreciated too. For another timeless bake with a similarly satisfying finish, you might also enjoy the Mary Berry Empire Biscuits recipe, which pairs a crisp shortbread base with a sweet icing and a jammy centre.