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A round marble sponge cake with a beautifully swirled pattern of chocolate and vanilla, resting on a white plate with cocoa dusting.

Classic Marble Sponge Cake


  • Author: Chef Clara
  • Total Time: 1 hour 10 minutes
  • Yield: 8 servings 1x

Description

Classic Marble Sponge Cake swirled with chocolate and vanilla—soft, moist, and perfect for tea time, birthdays, or elegant dessert tables!


Ingredients

Scale
  • 225g (1 cup) unsalted butter, softened

  • 225g (1 cup) caster sugar

  • 4 large eggs

  • 225g (1¾ cups) self-raising flour

  • 3 tbsp milk

  • 1 tsp vanilla extract

  • 2 tbsp unsweetened cocoa powder


Instructions

  1. Preheat Oven:

    • Preheat oven to 180°C (350°F).

    • Grease and line a 20cm (8-inch) round cake tin with parchment paper.

  2. Make the Batter:

    • Cream butter and sugar together until light and fluffy.

    • Beat in eggs one at a time.

    • Gently fold in flour, then stir in milk and vanilla until smooth.

  3. Divide and Flavor:

    • Split batter evenly into two bowls.

    • Mix cocoa powder into one bowl.

    • Spoon vanilla and chocolate batter alternately into the cake tin.

    • Swirl gently with a skewer or knife to create the marble effect.

  4. Bake and Cool:

    • Bake for 45–55 minutes, or until a skewer inserted into the center comes out clean.

    • Cool in tin for 10 minutes, then transfer to wire rack to cool completely.

  5. Serve:

    • Dust with powdered sugar or glaze if desired.

    • Slice and enjoy the beautiful swirled interior.

Notes

  • For extra richness, use a mix of dark cocoa powder and espresso powder in the chocolate batter.

  • Great with coffee or a scoop of vanilla ice cream.

  • Store in an airtight container for up to 3 days at room temperature.

  • Prep Time: 20 minutes
  • Cook Time: 50 minutes