Chocolate Marble Cake Recipe — Easy Vanilla and Chocolate Swirl
There is something so satisfying about slicing into a marble cake and seeing those swirls of chocolate and vanilla running through it. It looks like it took real effort, but this one comes together with just one simple batter split in two.
This recipe keeps things easy and approachable, whether you use a food processor to speed things along or mix everything by hand. Either way, you end up with a soft, buttery cake with pretty swirls and a light chocolate flavor running through every bite.
It is a great everyday bake, but simple enough to make often, and pretty enough to serve to guests without any extra decorating.
Craving more chocolate options? Check out this roundup of 15 Best Chocolate Cake Recipes, for even more ways to get your chocolate fix.
Why You Will Love This Recipe
- One simple batter split into two flavors for a pretty marbled effect
- Comes together quickly in a food processor, or just as easily by hand
- Soft, buttery texture with a light chocolate swirl throughout
- No special decorating skills needed, since the marbling does all the visual work
- Keeps well for days, making it great for snacking or make-ahead baking
Ingredients
- 225 grams butter, softened
- 225 grams caster sugar
- 4 eggs
- 225 grams self-raising flour
- 3 tablespoons milk
- 1 teaspoon vanilla extract
- 2 tablespoons cocoa powder
Ingredient Notes and Substitutions
- Self-raising flour already contains the raising agent needed for this cake. If you only have plain flour, add 2 teaspoons of baking powder per 225 grams of flour.
- Softened butter is important for a smooth batter, whether mixing by hand or in a food processor. Take it out of the refrigerator well ahead of time.
- Cocoa powder gives the chocolate half its flavor and color. Use a good quality unsweetened cocoa for the best results.
- A food processor makes this cake extremely quick to put together, but a hand mixer or a wooden spoon and some elbow grease work just as well.
Step-by-Step Instructions
Prepare the Tin
Preheat your oven to 350 degrees Fahrenheit (180 Celsius, or 160 Celsius fan). Grease a 8-inch round cake tin and line the base with a circle of greaseproof paper.
Make the Batter
If using a food processor, add the butter, caster sugar, eggs, self-raising flour, milk, and vanilla extract, then blend for one to two minutes until smooth.
If mixing by hand, beat the butter and caster sugar together until combined, then add the eggs one at a time, mixing well after each addition. Fold in the self-raising flour, milk, and vanilla extract until the mixture is smooth.
Split and Flavor the Batter
Divide the batter evenly between two bowls. Stir the cocoa powder into the batter in one of the bowls until fully combined, leaving the other bowl as the plain vanilla batter.
Create the Marble Effect
Using two spoons, dollop spoonfuls of the chocolate and vanilla batters into the prepared tin, alternating between the two so the base of the tin is evenly covered. Tap the tin gently on your work surface to release any air bubbles. Take a skewer and swirl it through the batter a few times to create a marbled pattern.
Bake the Cake
Bake for forty five to fifty five minutes, until a skewer inserted into the center comes out clean. Turn the cake out onto a cooling rack and leave to cool completely before slicing.
Tips for the Best Results
- Do not overmix once the flour is added, so the cake stays light and tender.
- Use a light hand when swirling the skewer, since over-swirling will blend the two batters together instead of creating distinct marbling.
- Make sure the cake is fully cooled before slicing, so the swirl pattern holds its shape.
- Check the cake a few minutes before the minimum bake time, since ovens vary.
Variations and Add-ins
- Add a handful of chocolate chips to the chocolate batter for extra richness.
- Swap the vanilla extract for almond extract for a different flavor twist.
- Dust the cooled cake with powdered sugar for a simple finishing touch.
- Bake in a loaf tin instead of a round tin for a different presentation.
What to Serve With It
- A cup of tea or coffee
- A dollop of whipped cream on the side
- Fresh berries for a pop of color and freshness
- A scoop of vanilla ice cream for an extra treat
Chocolate Marble Cake
Ingredients
Method
- Preheat the oven to 350 degrees Fahrenheit (180 Celsius, or 160 Celsius fan). Grease an 8-inch round cake tin and line the base with a circle of greaseproof paper.
- If using a food processor, add the butter, caster sugar, eggs, self-raising flour, milk, and vanilla extract, then blend for one to two minutes until smooth.
- If mixing by hand, beat the butter and caster sugar together until combined, then add the eggs one at a time, mixing well after each addition. Fold in the self-raising flour, milk, and vanilla extract until smooth.
- Divide the batter evenly between two bowls. Stir the cocoa powder into the batter in one bowl until fully combined, leaving the other bowl as plain vanilla batter.
- Using two spoons, dollop spoonfuls of the chocolate and vanilla batters into the prepared tin, alternating between the two so the base is evenly covered.
- Tap the tin gently on your work surface to release any air bubbles.
- Take a skewer and swirl it through the batter a few times to create a marbled pattern.
- Bake for forty five to fifty five minutes, until a skewer inserted into the center comes out clean.
- Turn the cake out onto a cooling rack and leave to cool completely before slicing.
Notes
- Keeps for 3 days in an airtight container, or can be frozen for up to 3 months.
- Do not overmix once the flour is added, so the cake stays light and tender.
- Use a light hand when swirling the skewer, since over-swirling will blend the two batters together instead of creating distinct marbling.
- Make sure the cake is fully cooled before slicing, so the swirl pattern holds its shape.
- Check the cake a few minutes before the minimum bake time, since ovens vary.
This is one of those cakes that always looks more impressive than the effort it actually takes. One batter, split in two, swirled together, and you get a bakery-style marble effect without any special skills.
It is a great one to have on hand for an everyday treat, and just as nice to bring out when you have guests over. Once it is on the cooling rack, the hardest part is waiting for it to cool before slicing in.
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