Easy Sourdough Bread Machine Recipe

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This is the easiest bread machine sourdough bread! Our Sourdough Bread Machine Recipe will give you perfect, bakery-fresh sourdough sandwich loaves every time.


  • 100 grams active sourdough starter
  • 40 grams butter, melted
  • 25 grams organic sugar
  • 350 grams water
  • 600 grams bread flour
  • 10 grams sea salt


  1. I formulated this recipe using my Oster Expressbake Bread Maker, which has a two pound loaf capacity. So, if you want to use my recipe as written, make sure your bread machine loaf pan has the same capacity. If yours is smaller, you will need to reduce the recipe. 
  2. Add the water, sourdough starter, sugar, and melted butter to the bread machine.
  3. On top of the liquids, add the bread flour and salt.
  4. Select the dough function on the bread machine and press start. My dough function kneads for 5 minutes, rests, then kneads for 20 minutes. Once the kneading is complete and the bread machine switches to rise mode, remove the kneading paddle, and tuck the dough ball into the middle of the pan. (After kneading the dough function automatically goes into a 60 minutes rise at a warm proofing temperature).
  5. Once the 1 hour and 30-minute dough function finishes, stretch and fold the dough once into a smooth dough ball and place it in the middle of the pan.
  6. Leave the dough in the pan inside the bread machine, undisturbed. Leave the bread machine off, and allow the dough to naturally rise for about six more hours until the dough nearly rises to the top of the bread pan. Don’t let it overproof, and refrain from opening the bread machine so it stays humid inside. If the top of the dough starts to dry out, I like to use a pastry brush to brush the top with a little water.
  7. After the dough has risen, brush the top of the dough with an egg wash (optional: score the top of the dough) and use the bake function. The bread will bake for 1 hour. If you feel it needs to bake longer, restart the bake function and bake until the top is golden brown.
  8. Using oven mitts, pull the bread out of the bread maker and allow it to cool before slicing.