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finished sourdough cranberry oatmeal cookies on a white counter top. The center cookie has a bite taken out.

Sourdough Cranberry Oatmeal Cookies (Slice and Bake Cookies)

Perfect for using up leftover fresh cranberries from the holidays, these easy slice-and-bake cranberry oatmeal cookies with sourdough starter are going to be a hit!

  • Prep: 15 minutes
  • Cook: 15 minutes
  • Total Time: 8 hours 30 minutes

Ingredients

  • 170 g all-purpose flour
  • 50 grams rolled oats
  • 1/4 tsp baking powder
  • 1/4 tsp baking soda
  • 1/2 tsp salt
  • 115 g salted butter*
  • 150 g sugar
  • 100 g sourdough starter*
  • 1 tsp vanilla extract
  • 3/4 cup minced fresh cranberries (or craisins)
  • 1/2 cup chopped white chocolate (or chips)
  • sprinkles (optional, for coating)

Instructions

  1. Brown the butter in a small saucepan until bubbly, and dark golden. Stir it continuously, careful to not burn it.
  2. Remove from heat and allow the butter to cool completely to room temperature.
  3. In a separate bowl, combine the dry ingredients (flour, baking soda, baking powder, salt).
  4. Once the butter has cooled completely but is still liquid, to a large bowl add the brown butter, sugar, vanilla extract, and sourdough starter. Combine with a whisk or hand mixer until even.
  5. Fold the combined dry ingredients into the wet ingredients. Stir until well combined.
  6. Add your chocolate and cranberries.
  7. Form the dough into a long shape and wrap it tightly in parchment paper. Refrigerate overnight.
  8. After refrigerating, preheat the oven to 350°
  9. (Optional) sprinkle some sugar and sprinkles onto a sheet pan. Unwrap the cookie dough and roll the log in the toppings.
  10. Line a cookie sheet with parchment paper. Slice the cookie dough into half inch thick slices.
  11. Place the cookie dough slices about two to three inches apart on the lined cookie sheet.
  12. Bake for 15-18 minutes or until the edges are a very pale golden brown and the tops have turned matte.
  13. Let them sit on the cookie sheet until they are completely cool.

Notes

  • You can use discard from the fridge or active starter. Either way it is “discarded” into this recipe since it is not used for rise. I keep a thick starter, so a thin watery starter will give you a different texture in these cookies.
  • if you do not like a cookie with a balanced salty-sweet flavor, use unsalted butter or reduce the added salt.

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Nutrition information is auto-calculated and estimated as close as possible. We are not responsible for any errors. We have tested the recipe for accuracy, but your results may vary.