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Marble Pound Cake

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This rich, buttery marble pound cake swirls chocolate and vanilla into one moist, decadent loaf—finished with ganache for the perfect elegant dessert.

  • Author: Emma
  • Prep Time: 15 minutes
  • Cook Time: 45–55 minutes
  • Total Time: ~1 hour 10 minutes
  • Yield: 8–10 slices
  • Category: Dessert
  • Method: Baking
  • Cuisine: American / European

Ingredients

For the Cake Batter

½ cup unsalted butter, room temperature

1 cup granulated sugar

2 large eggs, room temperature

⅔ cup full-fat sour cream

2 teaspoons vanilla extract

½ cup all-purpose flour

1 teaspoon baking powder

½ teaspoon salt

For the Chocolate Swirl

85 g (3 oz) dark chocolate, melted and cooled

2 tablespoons unsweetened cocoa powder, sifted

Instructions

Step 1: Prep Oven and Pan

Preheat your oven to 350°F (175°C).

Grease and lightly flour a 9×13-inch (23×13 cm) cake pan.

Step 2: Make the Batter

Cream the butter and sugar together until light and fluffy.

Add eggs one at a time, beating well after each.

Stir in sour cream and vanilla extract.

Sift in the flour, baking powder, and salt. Mix until just combined.

Step 3: Marble It

Divide the batter evenly into two bowls.

Stir the melted chocolate into one bowl. Mix the cocoa powder into the same bowl if desired for deeper flavor.

Alternate spoonfuls of vanilla and chocolate batter into the prepared pan.

Swirl lightly with a fork or skewer to create a marble effect (don’t overmix).

Step 4: Bake

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

Let cool in the pan for 15–20 minutes, then transfer to a wire rack.

Step 5: Serve

Top with ganache or dust with powdered sugar.

Slice and serve!

Notes

Bring eggs and sour cream to room temp for better texture.

Swirl lightly for distinct marbling — overmixing will muddy the pattern.

Add a ganache glaze for extra richness and shine.