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Chocolate Crepe Cake with Custard
Instructions
I start by making the chocolate crepes. I prepare all the ingredients from the list in advance – this simplifies the process and lets me focus straight away on mixing the batter.
I mix and sift the dry ingredients – the flour and the cocoa powder. Sifting is essential for distributing the cocoa evenly through the flour.
This step fills the flour with oxygen and breaks up any lumps in the cocoa. Without it, the finished crepes may have dark, unmixed specks of cocoa.
In a separate container, I whisk the eggs, salt and sugar together until smooth. I prepare the liquid base before combining it with the dry part – this way the batter comes out without lumps.
I add half of the milk (warm, not hot) and the flour in two stages. With a small amount of liquid, the dry ingredients blend more smoothly and all the lumps break up. As the final step, I pour in the remaining milk and the vegetable oil.
The chocolate crepe batter is ready. The consistency is like thin sour cream – it runs off the spoon in a thin stream.
I bake the crepes at a temperature below medium for about 2 minutes on one side – so that the crepe is almost done. I deliberately choose a medium temperature: on high heat the cocoa burns quickly, and on low heat the crepe sticks.
I cook the top side for a few seconds – it cooks quickly. I flip the crepe in the air or with a spatula – it should be baked through but elastic enough to roll.
The crepes are ready – I got 14 of them. I stack them on a plate and cover with a towel so they do not dry out.
To make the custard, I prepare all the ingredients from the list. The cornstarch (not potato starch!) is important: it gives a tender texture with no "graininess".
I mix the eggs with the sugar and salt, then add the cornstarch. I whisk thoroughly until smooth, with no lumps.
I heat the milk until hot and pour it in a thin stream into the cornstarch mixture, stirring vigorously with a whisk. It must be a thin stream – so the eggs do not curdle from sudden contact with the hot milk.
I transfer the mixture to a saucepan and put it on the stove to warm through, stirring constantly with a whisk. The custard "sets" quickly – I take it off the heat and let it cool to room temperature. For creaminess, I add 50 g of soft butter and stir it into the custard.
I cover the custard with cling film pressed directly onto the surface – so the surface does not dry out and no skin forms. This is an important step for keeping a smooth texture.
For assembling the cake – the crepes are ready and the custard is ready. I take 3 more bananas for the filling + 1 for decoration.
I cut the bananas into medium-sized pieces – not too small, so that the characteristic yellow banana rounds are visible when the finished cake is cut.
I line a springform pan or a round dish with cling film or a pastry bag – so the finished cake comes out of the form easily.
I line the form with crepes so that half of each crepe is inside the form and the other half is outside (for "wrapping" the top later). I cover the bottom with an extra crepe.
I cover the bottom and sides of the form with custard. I take a separate crepe, cover it with custard, lay out a row of sliced bananas and roll it up. I repeat with all the crepes.
I place the prepared crepe rolls in the form, spread custard between them, and form a second tier on top.
I cover the top with custard and fold the overhanging edges of the crepes over it – this gives a "closed" construction. I cover it with film, place a plate on top for a light press, and put it in the refrigerator for 6–8 hours.
After the resting time, I take the cake out of the refrigerator, place it on a dish and decorate it as I wish – with banana slices, cocoa on top, or chocolate glaze. The chocolate crepe cake with custard is ready!
Tips
- 1
Warm the milk for the batter until it is warm (not hot) – cold milk will give lumps, and hot milk will "cook" the eggs. Warm is the ideal temperature for mixing.
- 2
Do NOT replace the cornstarch with potato starch – it will give the custard a different texture, more "jelly-like" and with a slight graininess. Cornstarch gives a smooth tenderness.
- 3
Be sure to let the cake rest for 6–8 hours in the refrigerator – during this time the crepes soak up the custard and the flavour develops fully. I use a similar principle in other layer cakes.
- 4
Cut the bananas right before assembly – they darken quickly in the air. You can sprinkle them lightly with lemon juice to keep their colour when the cake is cut.
Video
FAQ
What can replace the bananas in the filling? +
Bananas give sweetness and a tender texture within the cream. Substitutes: strawberries (fresh or frozen), peaches (canned), sliced pears, stewed apples, pitted cherries, cubed mango. Each fruit brings its own character: strawberries – a sweet-and-sour note, peaches – tenderness, cherries – a bright contrast in colour. Watery fruits (watermelon, melon) are not suitable – they release juice and the cake will "float". Dried fruits (dried apricots, raisins) also work – soak them first for 15 minutes in hot water.
Can I use ready-made store-bought crepes? +
Store-bought crepes are fine if you are short on time. But homemade chocolate ones are far tastier. Ready-made crepes have no chocolate flavour – you would have to make "plain" crepes and mask them with chocolate cream (add 2 tbsp of cocoa to the cream). Frozen crepes from the supermarket are the worst option, as they are bland and rubbery after defrosting. If you choose store-bought, take fresh, home-style ones (from in-store "bakeries").
How long does the cake keep in the refrigerator? +
The cake keeps for 3–4 days in the refrigerator under cling film. On the second day the flavour is even better – the cream fully soaks the crepes. The bananas may darken slightly when cut – this is normal and the flavour does not suffer. I do not recommend freezing it: after defrosting the custard separates and the bananas become watery. The cake disappears quickly in the family, so it usually does not survive long enough to have storage problems.
Why might the custard fail to thicken? +
Three reasons: (1) the milk was not hot enough when combined with the egg-and-cornstarch mixture – the custard did not "set"; (2) too little cornstarch – for proper thickness you need exactly 20 g; (3) it was taken off the heat too early – the custard should thicken noticeably right in the saucepan. If the custard turns out runny, return it to low heat and warm it, stirring, for another 2–3 minutes. If the eggs have "curdled" (flecks appear), strain it through a sieve or blend it until smooth.
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