Description

This Classic Chocolate Marble Cake is a timeless dessert that combines moist vanilla and rich chocolate batters in a stunning swirl pattern. Perfect for any occasion, it’s a moist, tender cake that’s easy to make and even easier to love. Whether baked in a bundt or rectangular pan, this homemade marble cake delivers the perfect balance of flavor and beauty.

Ingredients

For the Cake Base:

2 1/2 cups (315g) all-purpose flour
1 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt
1 cup (226g) unsalted butter, softened
2 cups (400g) granulated sugar
4 large eggs, room temperature
1 teaspoon pure vanilla extract
1 cup (240ml) buttermilk (or 1 cup milk + 1 tbsp lemon juice or vinegar)

For the Chocolate Swirl:

1/2 cup (45g) unsweetened natural cocoa powder
1/4 cup (60ml) hot water or strong brewed coffee
1/3 cup (65g) granulated sugar

For the Cake Base:
- 2 1/2 cups (315g) all-purpose flour
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup (226g) unsalted butter, softened
- 2 cups (400g) granulated sugar
- 4 large eggs, room temperature
- 1 teaspoon pure vanilla extract
- 1 cup (240ml) buttermilk (or 1 cup milk + 1 tbsp lemon juice or vinegar)
For the Chocolate Swirl:
- 1/2 cup (45g) unsweetened natural cocoa powder
- 1/4 cup (60ml) hot water or strong brewed coffee
- 1/3 cup (65g) granulated sugar

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Instructions

Preheat oven to 350°F (175°C). Grease and flour your chosen baking pan.
Mix chocolate swirl: Combine cocoa, ⅓ cup sugar, and hot liquid. Whisk until smooth and lump-free. Set aside.
Prepare cake batter:
- Mix flour, baking powder, baking soda, and salt.
- Cream butter and sugar until fluffy (3–5 minutes).
- Add eggs one at a time, then vanilla.
- Alternate adding flour mixture and buttermilk. Mix until just combined.
Create marble effect:
- Fold 2 cups of vanilla batter into the chocolate mixture.
- Layer batters in the pan and swirl gently with a knife or skewer.
Bake: 50–60 minutes or until a toothpick comes out clean.
Cool: Rest in pan for 10–30 minutes, then invert or lift out to cool completely.
Optional: Dust with powdered sugar or glaze.

Notes

Coffee enhances chocolate flavor without overpowering.
Avoid overmixing to preserve distinct swirls.
Cake keeps well for 3–4 days in an airtight container.

Prep Time: 25 minutes
Cook Time: 50–60 minutes
Category: Dessert
Method: Baking
Cuisine: American