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Sourdough carrot cake whoopie pies.

Sourdough Carrot Cake Whoopie Pies

These sourdough carrot cake whoopie pies are soft, moist, and warmly spiced with cinnamon, ginger, and nutmeg. Fresh shredded carrots, quick oats, and sourdough starter create tender, cake-like cookies that are sturdy enough to sandwich with a creamy cinnamon filling for a cozy homemade fall treat.
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Prep Time 20 minutes
Cook Time 10 minutes
Chill Time 30 minutes
Total Time 1 hour
Servings 15 whoopie pies (depending on the size you make them!)

Ingredients
  

For the Sourdough Carrot Cake Whoopie Pies

  • 3 cups all-purpose flour
  • 1 ¼ cups quick oats
  • ¾ tsp baking soda
  • ½ tsp baking powder
  • 1 ½ tsp ground cinnamon
  • ¼ tsp ground ginger
  • ⅛ tsp ground nutmeg
  • ½ tsp salt
  • ½ cup unsalted butter, softened
  • ½ cup packed brown sugar
  • ⅓ cup granulated sugar
  • 1 large egg
  • 1 tsp vanilla extract
  • ½ cup sourdough starter or discard
  • 2 cups finely shredded carrot

For the Cinnamon Whoopie Pie Filling

  • 1 cup unsalted butter, softened
  • 2 cups powdered sugar
  • 1 jar marshmallow fluff
  • 1 tsp vanilla extract
  • ½ tsp ground cinnamon