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Sourdough Granola Bars

Homemade Sourdough Granola Bars

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  • Author: Adeline Parker
  • Prep Time: 20 minutes
  • Cook Time: 30 minutes
  • Total Time: 3 hours
  • Yield: 16 bars
  • Category: Snacks
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Homemade sourdough granola bars made with toasted oats, sourdough discard, and natural sweeteners for a chewy, tangy snack that’s perfect for on-the-go eating.


Ingredients

  • 300g rolled oats (about 3⅓ cups), lightly toasted
  • 110g salted butter (about ½ cup, or substitute 90g butter + 20g nut/seed butter)
  • 200g maple syrup or honey (about ⅔ cup)
  • 50g brown sugar (about ¼ cup)
  • 80g sourdough discard (about ⅓ cup)
  • 1 teaspoon vanilla extract
  • Optional add-ins: dried fruit, chocolate chips, nuts, seeds (e.g., cranberries, pecans, pumpkin seeds)


Instructions

  1. Preheat your oven to 325°F (160°C). Spread the rolled oats evenly on a baking sheet and toast for 10-15 minutes until fragrant and lightly golden. Let them cool.
  2. Line a 9×9-inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  3. In a saucepan set over low heat, melt the butter (and any optional nut or seed butter).
  4. Stir in the maple syrup (or honey), brown sugar, and sourdough discard until combined. Remove the pan from the heat and stir in the vanilla extract.
  5. In a large mixing bowl, combine the cooled toasted oats with any desired mix-ins (dried fruit, chocolate chips, nuts, seeds).
  6. Pour the wet mixture from the saucepan over the dry ingredients. Stir well until all the oats and mix-ins are evenly coated. Let the mixture rest for 10-15 minutes to allow the oats to absorb some moisture.
  7. Transfer the mixture to your prepared baking pan. Press it down very firmly and evenly into the pan. This crucial step helps the bars hold together.
  8. Bake for 25-30 minutes, or until the edges appear golden brown.
  9. Remove from the oven and allow the granola bars to cool completely in the pan for at least 2 hours. For quicker cooling, you can refrigerate them for 30 minutes.
  10. Once fully cooled and set, lift the granola block from the pan using the parchment paper. Cut into desired bar sizes.

Notes

  • Use sourdough discard straight from the fridge for best results; it adds tanginess without needing fermentation.
  • Pressing the mixture firmly into the pan is key to prevent crumbly bars.
  • Optional add-ins like dried cranberries, pecans, or pumpkin seeds can be added up to 1 cup total for variety.
  • Store bars in an airtight container at room temperature for up to 1 week or freeze for longer storage.