INGREDIENTS
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Nonstick cooking spray
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9 ounces cake flour, approximately 2 cups
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1 teaspoon baking powder
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1/2 teaspoon kosher salt
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1/2 teaspoon ground ginger
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2 ounces unsalted butter, room temperature
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5 1/4 ounces sugar, approximately 3/4 cup
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1 large egg
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1/2 cup whole milk
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15 ounces fresh whole blueberries, approximately 3 cups
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For the topping:
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3 1/2 ounces sugar, approximately 1/2 cup
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1 1/2 ounces cake flour, approximately 1/3 cup
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1/2 teaspoon freshly ground nutmeg
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2 ounces unsalted butter, chilled and cubed