"Classic crumb cake made with sourdough starter, for a hint of tang...."
INGREDIENTS
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2 cups (241g) King Arthur Unbleached All-Purpose Flour
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1 cup (198g) granulated sugar
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1 1/2 teaspoons ground cinnamon
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1/2 teaspoon salt
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1 teaspoon vanilla extract
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1/2 teaspoon almond extract
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3/4 cup (12 tablespoons 170g) unsalted butter melted
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1/2 cup (8 tablespoons 113g) unsalted butter at room temperature at least 65°F
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1 cup (198g) granulated sugar
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2 large eggs at room temperature
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1 tablespoon vanilla extract
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1 cup (227g) sourdough starter unfed/discard
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2 cups (241g) King Arthur Unbleached All-Purpose Flour
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1 tablespoon potato flour or 2 tablespoons instant mashed potato flakes
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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1/4 cup (57g) milk at room temperature
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confectioners' sugar optional