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Sourdough Blueberry Crumb Cake
Ingredients
  • subheading: Crumb Topping:
  • 6 Tablespoons unsalted butter melted
  • ⅓ cup granulated sugar
  • 1 teaspoon vanilla extract
  • 1 teaspoon cornstarch
  • ½ teaspoon salt
  • 1 cup all purpose flour
  • subheading: Sourdough Blueberry Cake:
  • 1.5 cups all purpose flour
  • 1 Tablespoon cornstarch
  • ½ teaspoon baking soda
  • 1 teaspoon baking powder
  • ½ teaspoon salt
  • 6 Tablespoons unsalted butter softened
  • ⅔ cup granulated sugar
  • 1 egg
  • 1 egg yolk
  • 2 teaspoons vanilla extract
  • ¾ cup sourdough discard or bubbly sourdough starter
  • ½ cup buttermilk see recipe notes for substitutions
  • 2.5 cups fresh blueberries see recipe note for frozen blueberries
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