Vegan Espresso Swirl Banana Bread Bars
These bars are the kind of treat that disappears fast at a potluck — rich, fudgy-edged, and swirled with a mocha ribbon that makes every slice look like it came from a fancy bakery. The magic starts with flax eggs, which bind the batter just as reliably as conventional eggs, so the texture is tender and cohesive without any animal products in sight. Very ripe bananas do the heavy lifting for sweetness and moisture, meaning you get a deeply flavorful bar without needing dairy butter or milk. A quick espresso-cocoa paste made with plant-based milk gets dolloped and swirled through the batter before baking, creating that dramatic marble pattern and a bold coffee-chocolate hit in every bite. The whole thing bakes in a 9×13 pan and cuts into 16 bars, making it an ideal make-ahead option for sharing. Nothing here is hard to find or complicated to pull off — just straightforward pantry ingredients and a few minutes of swirling with a butter knife.
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Learn more →Ingredients
16 servings
For the flax eggs
- 2 tbsp ground flaxseed
- 6 tbsp water
For the batter
- 3 medium very ripe bananas (about 1 ¼ cups mashed)
- ½ cup vegan butter, melted and cooled
- ¾ cup organic cane sugar
- 1 tsp pure vanilla extract
- 1 ¾ cups all-purpose flour
- 1 tsp baking soda
- ½ tsp fine salt
For the espresso swirl
- ¼ cup unsweetened cocoa powder
- 2 tsp instant espresso powder
- 2 tbsp organic cane sugar
- 3 tbsp plant-based milk
Instructions
- 1
Preheat the oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving an overhang on the long sides.
- 2
In a small bowl, stir together the ground flaxseed and water until combined. Set aside for 10 minutes, until the mixture thickens to a gel.
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