Anna Louise A marble cake is one of the most visually satisfying cakes in the baking repertoire. The same batter divided, flavoured differently, then swirled together before baking — giving a cross section when sliced that reveals a beautiful, irregular pattern of chocolate and orange sponge that looks like it required extraordinary skill and required almost none.
The chocolate and orange combination makes this marble cake considerably more interesting than the standard chocolate and vanilla version. The orange brightens and lifts the chocolate — giving each slice two distinct flavours that are better together than either would be alone.
The vivid orange of the orange sponge against the deep brown of the chocolate gives a marble pattern that is genuinely beautiful.
This recipe produces a loaf cake — the most traditional format for a marble cake — with an orange glacé icing drizzled over the top and a scattering of orange zest that makes the finished loaf look elegant and professional.
Ingredients for Mary Berry Chocolate and Orange Marble Cake
For the Marble Cake
- 225g unsalted butter, softened
- 225g golden caster sugar
- 4 large eggs, at room temperature
- 225g self-raising flour, sifted
- 2 tsp baking powder
- 3 tbsp whole milk
- 1 tsp vanilla extract
For the Orange Batter:
- Finely grated zest of 2 large unwaxed oranges
- 1 tbsp fresh orange juice
- A few drops of orange food colouring gel (optional — deepens the visual contrast)
For the Chocolate Batter:
- 30g good quality cocoa powder, sifted
- 2 tbsp warm water — to loosen the chocolate batter
- 1 tsp espresso powder (optional — deepens the chocolate flavour)
For the Orange Glacé Icing
- 150g icing sugar, sifted
- 2–3 tbsp fresh orange juice
- Finely grated zest of ½ unwaxed orange
How to Make Mary Berry Chocolate and Orange Marble Cake
Step 1 — Preheat and Prepare
Preheat your oven to 180°C / 160°C fan / Gas 4. Grease a 900g (2lb) loaf tin generously and line with baking parchment, leaving overhang at both long sides.
Step 2 — Make the Base Batter
Beat the softened butter and golden caster sugar together for four to five minutes until pale and very fluffy. Add the eggs one at a time, beating well after each. Add the vanilla extract.
Sift the flour and baking powder into the bowl. Add the milk. Fold gently until just combined.
Step 3 — Divide and Flavour
Divide the batter equally between two bowls — weigh for exactly equal portions.
To the first bowl — add the orange zest, orange juice, and orange food colouring if using. Fold gently until evenly orange-coloured and fragrant.
To the second bowl — add the sifted cocoa powder, warm water, and espresso powder if using. Fold gently until evenly dark and completely combined.
Step 4 — Marble the Batter
Drop alternating spoonfuls of orange and chocolate batter into the prepared loaf tin — working from one end to the other, alternating between the two. Do not smooth or spread.
Once all the batter is in the tin, take a skewer or a thin knife and drag it through the batter in a figure-of-eight or zigzag pattern — four to five passes, no more. This creates the marble without blending the two batters into a muddy mixed colour.
Step 5 — Bake
Bake for 50 to 60 minutes until a skewer inserted into the very centre comes out clean and the top is deep golden with the characteristic loaf cake crack down the centre.
Cover loosely with baking parchment after 35 minutes if the top is browning too quickly.
Leave to cool in the tin for fifteen minutes. Lift out using the parchment overhang. Cool completely on a wire rack.
Step 6 — Apply the Orange Glacé Icing
Mix the sifted icing sugar with enough orange juice to make a smooth, slightly runny glaze — flowing in a steady ribbon from a spoon. Stir in the orange zest.
Pour over the completely cooled loaf cake, letting it drip naturally over the edges. Leave to set for fifteen minutes before slicing.
My Top Tips For Perfect Chocolate and Orange Marble Cake
Divide the batter by weight — exactly equal portions. Equal amounts of orange and chocolate batter give the most balanced marble pattern. Too much of one or the other gives an uneven result dominated by a single colour.
Four to five passes with the skewer — no more. The swirling is the step most often overdone. Four to five passes through the alternating batters gives distinct, beautiful swirls. Ten passes gives a muddy, mixed colour that is neither clearly orange nor clearly chocolate.
Drop batter in alternating spoonfuls rather than pouring one on top of the other. Alternating spoonfuls from the start give the most distinct, most evenly distributed marble. Pouring one colour on top of another gives uneven distribution.
The espresso powder in the chocolate batter is the detail that deepens everything. One teaspoon of instant espresso dissolved in the warm water deepens and intensifies the chocolate flavour without making the cake taste of coffee. It is optional but excellent.
Apply the glacé icing only when the cake is completely cold. Even slightly warm cake causes the icing to run off rather than setting in an attractive drizzle. Complete cooling — at least an hour on the rack — is necessary.
Serving Suggestions
Sliced at room temperature with a cup of strong coffee — the orange and chocolate combination with coffee is completely natural. As a gift — it travels well and keeps for four days. As an afternoon tea loaf cake.
How to Store
At room temperature: Store in an airtight container for up to 4 days. The flavours deepen and integrate over the first two days.
In the freezer: Freeze without the icing for up to 3 months. Apply the icing fresh after defrosting.
Try These Recipes
- Mary Berry Apple Sponge Cake
- Mary Berry Carrot Cake Muffins
- Mary Berry Chocolate Orange Cheesecake
- Mary Berry Lemon And Lime Cheesecake
Mary Berry Chocolate and Orange Marble Cake Recipe
Ingredients
Method
- Preheat oven to 180°C / 160°C fan / Gas 4. Grease and line a 900g loaf tin with parchment sling.
- Beat butter and sugar 4–5 minutes. Add eggs one at a time. Add vanilla. Sift in flour and baking powder. Add milk — fold gently. Divide batter exactly in half by weight into 2 bowls.
- Fold orange zest, juice, and colouring into one bowl. Fold cocoa, warm water, and espresso powder into the other — until both are evenly coloured.
- Drop alternating spoonfuls of orange and chocolate batter into the tin along its length. Take a skewer — make 4–5 passes through the batter in a figure-of-eight. No more.
- Bake 50–60 minutes until skewer comes out clean. Cover loosely after 35 minutes if browning too quickly. Cool in tin 15 minutes — lift out. Cool completely.
- Mix icing sugar and orange juice to a smooth flowing glaze. Add zest. Pour over cooled loaf — let it drip. Set 15 minutes. Slice.
Notes
Frequently Asked Questions
Can I make this as a round cake instead of a loaf?
Yes — use a deep 20cm round springform tin. Bake at the same temperature for 40 to 45 minutes. The marble pattern is visible in the cross section when the cake is sliced.
Can I use lemon instead of orange?
Yes — lemon and chocolate marble cake uses lemon zest and juice in the light batter and lemon glacé icing on top. The sharper, more vivid lemon gives a different but equally good contrast to the chocolate.
Can I add chocolate chips to the chocolate batter?
Yes — 50g of dark chocolate chips folded into the chocolate batter give extra pockets of chocolate intensity.
Why are my marble swirls muddy and grey?
The batters were overswirled. Four to five passes with the skewer is the maximum — more blends the two colours into a grey-brown mixture that is neither orange nor chocolate.
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