Prep
- Preheat the oven to 350ºF. Line a loaf tin with parchment paper.
- *To make the flax eggs, mix 2 tablespoons of ground flax seeds with 5 tablespoons of water. Let this mixture thicken while working on the next steps.
- In a medium-size bowl, mix the sugar, yogurt, vegan butter, and flax eggs. In a large mixing bowl, sift the flour, salt, and baking powder. Fold the wet ingredients into the dry ones. Pour ⅓ of the batter into another bowl, add the cocoa powder, and stir until combined.
- You can now start layering your marble cake. Pour half of the plain batter into the loaf tin, spreading it out evenly with a spatula. Then pour half of the cocoa batter into the loaf tin. Repeat with the remaining plain and cocoa batters. Zigzag a knife through the batter to create the marbling effect.
- Bake for 60-70 minutes, until the loaf cracks in the middle, and a toothpick comes out clean. Cool on a rack before slicing the marble cake.