This delightful bake showcases the expertise of a legendary British baker and proves that simple ingredients can produce a truly luxurious dessert.
The recipe draws on decades of experience and more than 75 published cookbooks to deliver a moist, tender crumb that stands out among classic treats. It uses oil to keep the texture soft and stable, while rich cocoa brings deep flavour.
Whether you are new to baking or seeking a reliable showstopper, this chocolate cake recipe is forgiving and straightforward. The method is clear, the steps are easy to follow, and the result pairs beautifully with smooth icing or a light dusting of sugar.
This is a dependable cake recipe for special occasions or everyday tea. Expect a decadent, well-balanced taste that guests will praise and return to as one of your favourite recipes.
Key Takeaways
- Renowned baker credited with over 75 cookbooks lends authority to the recipe.
- Oil-based mix ensures a moist, tender crumb ideal for lasting freshness.
- The method is simple, suitable for bakers of all skill levels.
- Rich cocoa flavour is balanced and pairs well with a variety of icings.
- This chocolate cake recipe is a reliable choice for celebrations and everyday baking.
Why You Will Love This Mary Berry Chocolate Cake With Oil
This luxurious tray bake turns simple storecupboard ingredients into a memorable celebration centrepiece. It feels indulgent, yet stays straightforward to make.
There is nothing better than the smell of freshly baked cake wafting from the kitchen, a sentiment often shared by mary berry fans and baking enthusiasts alike. That aroma alone lifts any gathering.
Expect oohs and ahhs: the sponge has a moist, fudgey crumb that many home bakers call a favourite. The method is forgiving, so even nervous cooks enjoy success.
- Sheer indulgence for special occasions or simple treats.
- Easy steps let you focus on the joy of baking.
- The icing adds a decadent finish to every slice.

Whether you’re trying a new chocolate cake recipe or revisiting a classic cake recipe, these cakes become trusted recipes you return to time and time again.
Essential Ingredients and Kitchen Equipment
Start by collecting the precise weights and tools so the bake goes smoothly from bowl to rack. Good preparation saves time and prevents mistakes. Lay out the ingredients, check tins and have a clean bowl ready before you heat the oven.
Dry Ingredients
- 275g plain flour and 215g caster sugar for the sponge base.
- 3 tbsp cocoa powder and 3 tbsp golden syrup for depth of flavour.
- 1½ tsp bicarbonate of soda (tsp baking) and 1½ tsp baking soda to lift the layers.
- 3 eggs and 225ml milk to bind and enrich the batter.
- For the icing: 450g plain chocolate and 200g unsalted butter.
Necessary Baking Tools
- Two loose-bottomed 20cm sandwich tins lined with non-stick baking paper.
- A sifter to combine flour, cocoa powder and baking powder without lumps.
- A sturdy wooden spoon, a clean mixing bowl and a wire rack for cooling.
- Measure tbsp and tsp accurately; precise powder and tsp quantities keep cakes light and even.
Mastering the Baking Process
This section helps you turn a good batter into evenly baked layers using simple, reliable timing and temperature tips.
Oven Temperatures and Timing
Preheat properly: set your oven to 160C (Gas Mark 3) and allow it to reach temperature before you place the sandwich tins inside. If your oven lists 180C settings, cross-check the 180C 160 readings and use a 160 fan or 180c 160 fan conversion when needed.
- Sift flour, cocoa powder and baking powder into a large bowl, then add caster sugar and mix briefly.
- Make a well in the centre and pour in golden syrup, eggs, milk and sunflower oil or water as the recipe asks.
- Beat with a wooden spoon until smooth, then divide the batter between lined sandwich tins.
- Bake for about 35 minutes; test by pressing the top gently — it should spring back after the stated bake minutes.
- Turn the cakes onto a wire rack and remove the baking paper so they can leave cool completely.
Final tip: always check your oven 180c 160 fan is calibrated. Bake minutes can vary by appliance, so adjust times slightly and trust the spring-back test rather than time alone.

Adding the Perfect Chocolate Icing and Decoration
A glossy finish lifts this sponge from homemade to show-stopping in just a few careful steps. Follow a simple melting and assembly routine to keep the surface smooth and shiny.
Melting the chocolate
Melting the Chocolate
Break 450g of plain chocolate into pieces and place them in a heatproof bowl over a pan of hot water.
Stir occasionally until fully melted, then add 200g unsalted butter and stir until the mix is smooth and glossy.
Applying the icing
Applying the Icing
Set the bottom sandwich layer on a tray and spoon a little melted chocolate icing into the centre to anchor the next layer.
Repeat for the second layer, then pour remaining icing over the top to create an even, glossy finish. Use a small palette knife to smooth the icing top so it sets without the fridge.
Tip: avoid chilling the bake; professional bakers advise leaving the tray in a room that is not too cold so the shine stays perfect.
Creating chocolate waves
Creating Chocolate Waves
Melt 50g each of white and plain chocolate in separate bowls over a pan of hot water. Spread each on strips of foil and drape them over mugs to set into gentle waves.
Arrange these decorations on the top cake surface to add a bakery-style flourish that looks impressive and hand-made.
Conclusion
Finally, a few reliable steps deliver a moist, glossy sponge that shines at tea and celebrations.
This mary berry chocolate cake strikes the right balance of ease and bakery-quality finish. Follow the method and you will have a moist, fudgey chocolate cake that stays fresh and tastes indulgent.
Tip: let the icing set naturally so the top keeps a smooth, professional shine. For more classic inspiration and a lighter sponge option, try the mary berry coconut cake.
FAQ
What oven temperature should I use for this recipe?
Can I use plain flour or do I need self-raising flour?
How long should the layers bake in sandwich tins?
Is caster sugar the best choice for this recipe?
Can I replace eggs or milk for dietary needs?
How do I melt chocolate for the icing without burning it?
What is the best way to apply the chocolate icing smoothly?
How can I create decorative chocolate waves on top?
Should I line the sandwich tins with baking paper?
Can I use cocoa powder from the cupboard or do I need a specific type?
How do I know when to leave the cake to cool on the wire rack?
What quantities of ingredients are typical for two 20cm sandwich tins?
Can I bake this in one large pan instead of sandwich tins?
How should I store the finished cake and how long will it keep?
Mary Berry Chocolate Cake With Oil
This delightful bake showcases the expertise of a legendary British baker and proves that simple ingredients can produce a truly luxurious dessert. The recipe delivers a moist, tender crumb that stands out among classic treats.
Ingredients
- 275g plain flour
- 215g caster sugar
- 3 tbsp cocoa powder
- 3 tbsp golden syrup
- 1½ tsp bicarbonate of soda
- 1½ tsp baking powder
- 3 eggs
- 225ml milk
- 225ml sunflower oil
- 450g plain chocolate
- 200g unsalted butter
Method
- Preheat your oven to 160C (Gas Mark 3).
- Sift flour, cocoa powder, and baking powder into a large bowl, then add caster sugar and mix briefly.
- Make a well in the center and pour in golden syrup, eggs, milk, and sunflower oil.
- Beat with a wooden spoon until smooth, then divide the batter between lined sandwich tins.
- Bake for about 35 minutes; test by pressing the top gently — it should spring back.
- Turn the cakes onto a wire rack and remove the baking paper to cool completely.
- For the icing, melt 450g of plain chocolate in a heatproof bowl over a pan of hot water, then stir in 200g of unsalted butter until smooth.
- Set the bottom sandwich layer on a tray and spoon a little melted chocolate icing into the center to anchor the next layer.
- Repeat for the second layer, then pour remaining icing over the top and smooth with a palette knife.
- To create chocolate waves, melt 50g each of white and plain chocolate in separate bowls, spread on strips of foil, and drape over mugs to set.
