
A French-style chocolate vanilla marble loaf with ground almonds, real dark and white chocolate, and a tender, fine crumb. An elegant cake for tea or dessert.
35 min active · 1 hr 55 min total
Weigh the two batters rather than relying on spoonfuls. Even portions make the finished marble pattern more balanced from end to end.
Keep the melted chocolates warm enough to flow but not hot. Hot chocolate can thicken the batter or start to cook the eggs.
Make only two or three long passes with the skewer. More swirling blends the colours into a muddy batter instead of distinct ribbons.
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Heat the oven to 160C fan / 180C conventional. Line a 23 x 13 cm loaf tin with baking parchment, leaving an overhang. Melt the dark and white chocolate separately, then leave them to cool until warm and fluid.
For the chocolate batter, beat the eggs, sugar, and invert sugar syrup for 2 to 3 minutes until slightly paler and thickened. Sift together the ground almonds, cake flour, baking powder, and cocoa, then fold them in just until no dry streaks remain.
Fold in the cream and oil, followed by the melted dark chocolate. Stop as soon as the batter is even; overmixing makes the baked crumb tight.
Beat the eggs, sugar, and invert sugar syrup for 2 to 3 minutes. Sift together the ground almonds, cake flour, and baking powder, then fold them into the egg mixture.
Fold in the cream, oil, vanilla bean paste, and melted white chocolate until smooth. The two batters should be similarly thick; if one has noticeably stiffened, fold in 1 teaspoon of cream.
Spoon alternating thirds of the chocolate and vanilla batters into the lined tin. Run a skewer through the batter in two or three long S-shaped passes, then tap the tin once or twice on the counter to settle it.
Bake for 45 to 50 minutes, until a skewer inserted into the centre comes out with a few moist crumbs but no wet batter. If the top browns early, tent it loosely with foil for the final 10 minutes.
Cool in the tin for 15 minutes, then lift the cake onto a wire rack. Let it cool for at least 20 minutes more before slicing so the marble pattern sets cleanly.
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Everything you want to know about this recipe.
This French-style chocolate vanilla marble cake is a refined loaf rather than an everyday butter cake. Two almond-enriched batters are made separately, then layered with dark chocolate and vanilla bean before a quick, restrained swirl. The result is a fine, tender crumb with defined ribbons of chocolate and vanilla in every slice.
The recipe is designed for one standard 23 x 13 cm (9 x 5-inch) loaf tin. The formula has been scaled to that tin, so the batter has room to rise and the centre bakes through in the stated time.

Ground almonds provide a fine, moist crumb and a subtle nuttiness that supports both flavours without making the cake taste overtly of marzipan. A small amount of invert sugar or glucose syrup helps the loaf stay supple for a day or two, while oil keeps the crumb tender even after it has cooled.
Real dark chocolate makes the chocolate half taste rounded rather than simply cocoa-heavy. White chocolate adds a little body to the vanilla half without turning it into a separate white-chocolate cake. Melting and cooling each chocolate first matters: it must be fluid enough to fold in but not hot enough to tighten the batter.
The two batters should be similar in thickness, which is why the chocolate batter has a little less flour. Layer large alternating dollops rather than thin stripes, then use only two or three long skewer passes. Frequent small swirls blend the colours and give a grey-brown crumb instead of clear ribbons.
For sharp slices, allow the loaf to cool on a rack before cutting. A warm slice will still taste good, but the crumb and swirl are more delicate before they have set.
Serve this marble cake with coffee, tea, or a spoonful of softly whipped cream and berries for dessert. It is particularly good the day it is baked and remains tender in an airtight container at room temperature for 2 days. For longer storage, wrap individual slices and freeze for up to 1 month; thaw at room temperature while still wrapped.
For a simpler, buttery version with a more classic cocoa swirl, see Chocolate Vanilla Marble Cake. That recipe is intentionally more everyday in style, while this one focuses on almond flour, real chocolate, and a finer French-style crumb.
The batter was stirred too much after layering, or one batter was considerably thinner. Keep the swirl brief and fold the two batters only until smooth.
An oven that runs hot can colour the chocolate-rich surface before the centre sets. Tent the loaf loosely with foil for the final 10 minutes and continue baking until the skewer has moist crumbs rather than wet batter.
Overmixing after the flour goes in is the usual cause. Fold only until the dry ingredients disappear, and make sure the cream, oil, and eggs are all near room temperature so the batter stays smooth.
Serving Size: 1 slice
* Reference intakes are based on an average adult's 8,400 kJ / 2,000 kcal diet. Your needs may be higher or lower.
Yes. Glucose syrup is the closest neutral substitute. Runny honey also works, but it adds its own flavour; choose a mild one if you want the vanilla and chocolate to remain the focus.
The batter was probably swirled too much or one batter was much thinner than the other. Fold both only until smooth, layer them in larger dollops, and make just a few long skewer passes.
Yes. Replace the cake flour by weight with plain flour. The crumb will be slightly less delicate, but the loaf will still bake well.
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5 ratings
How would you rate this recipe?
The foil tip saved the top of my loaf. The centre was tender, and the almond flavour made it feel more special than an everyday marble cake.
The scale weights made this far easier than guessing spoonfuls. I used glucose syrup and the vanilla and chocolate ribbons stayed distinct.
Rich but not too sweet. Great recipe!
Loved the dual batters. The almond flour adds a beautiful texture.
Made this for a weekend brunch—so moist and the marbling looked perfect!
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