Fairtrade chocolate and banana crêpe cake

Feeds 16 - Ready in 2 Hours
This spectacular layer cake features 25 crêpes stacked up with banana cream and chocolate ganache.

Ingredients:
- 
300g Co-op plain flour 
- 
75g Fairtrade cocoa powder,plus extra for dusting 
- 
60g Co-op Fairtrade light brown soft sugar 
- 
3 Co-op British free range eggs, plus 3 yolks, lightly beaten 
- 
750ml Co-op semi-skimmed milk 
- 
40g Co-op unsalted butter, melted 
- 
Sunflower oil, for frying 
For the banana cream:
- 
350ml Co-op semi-skimmed milk 
- 
4 Co-op British free range egg yolks 
- 
100g Fairtrade caster sugar 
- 
20g cornflour 
- 
20g Co-op plain flour 
- 
300ml Co-op double cream 
- 
2 ripe Co-op Fairtrade bananas, mashed 
For the Ganache:
- 
150g Co-op Irresistible Fairtrade 70% cocoa dark chocolate 
- 
150ml Co-op double cream 
To decorate:
- 
Co-op Irresistible Fairtrade white, milk and dark chocolate 
Directions:
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For the crêpes, sift the flour and cocoa into a bowl and stir in the sugar 
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Make a well in the middle then add the beaten egg 
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Whisk to combine, then slowly whisk in the milk and butter 
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Leave to rest for 30 mins 
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Meanwhile, make the banana cream 
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Heat the milk until it just starts to boil. In a bowl, whisk the yolks, sugar, cornflour and flour together 
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Slowly whisk in the hot milk, then return the mixture to the pan 
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Whisk over a medium heat until thick and glossy, then leave to cool completely 
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Whip the cream into soft peaks, then fold it through the cooled custard, along with the banana. Chill, covered with cling film, for at least 30 mins 
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While it’s chilling, fry the crêpes 
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Brush a 24cm nonstick frying pan with oil and warm over a medium heat Add about 50ml batter and swirl the pan to coat the base. Cook for 1-2 mins, until the crêpe is dry on top, then flip over and cook for 30 seconds 
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Transfer to greaseproof paper and repeat to make 25 crêpes, stacking them with greaseproof paper in between 
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Break the chocolate for the ganache into a bowl 
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In a pan, bring the cream to a simmer, without boiling, then pour over the chocolate. Leave for 30 seconds, then stir until smooth, thick and glossy 
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Allow to cool fully 
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To assemble the cake, put a crêpe on a serving plate 
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Spread over 1 heaped tablespoon of the banana cream and top with another crêpe 
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Repeat for all the crêpes, then chill until firm 
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Using a palette knife, cover the top and sides with the ganache 
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Shave the chocolate into curls with a potato peeler, then use to decorate the cake 
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Dust with cocoa and chill until needed