These Sourdough Discard Banana Bars (or should we call it sourdough discard banana sheet cake?) are one of my favorite ways to use up extra bananas and sourdough discard.
They’re incredibly moist, soft, and packed with banana flavor. Plus, they come together quickly, making them a great option when you want something homemade but easy!
Sourdough Banana Bars – bananas – all-purpose flour – sugar
Set your oven to 375°F and prepare a rimmed 11×16 baking sheet by greasing it or lining it with parchment paper.
In a large bowl, use a hand mixer to combine sugar, sour cream, softened butter, and eggs. Mix for about a minute until smooth and well combined.
Stir in the mashed bananas, sourdough discard, and vanilla extract. The batter will be a little runny at this stage.
In a separate bowl, whisk together the flour, baking soda, and salt.
Gradually add the dry ingredients into the wet mixture, mixing with a hand mixer. Pour the batter into the prepared baking sheet and spread it evenly.