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King Arthur's Sourdough Waffles | In Jennie's Kitchen

King Arthur's Sourdough Waffles

Prep Time 8 hrs
Cook Time 20 mins
Total Time 8 hrs 20 mins
Servings 10 to 12


  • NIGHT BEFORE: overnight sponge
  • 2 cups all-purpose flour
  • 2 tablespoons sugar
  • 2 cups buttermilk
  • 1 cup sourdough starter unfed/discard
  • NEXT MORNING: waffle batter
  • all of the overnight sponge
  • 2 large eggs
  • 1/4 cup melted butter
  • 3/4 teaspoon salt
  • 1 teaspoon baking soda


  • For the overnight sponge, preheat your waffle iron. Combine the starter, flour, sugar, and buttermilk in a large bowl. Stir to mix well. Cover and let rest at cool room temperature for about 8 to 12 hours, or overnight. Timing depends on the temperature of your home.
  • The next morning, in a small, separate bowl, beat the eggs, and butter. Add to the overnight sponge along with the salt and baking soda. Stir to combine. The batter will bubble, remember sourdough is alive.
  • Grease your waffle iron. Pour batter into it, and bake according to the manufacturer's instructions.
  • Serve waffles immediately.