INGREDIENTS
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6 tablespoons (3 ounces) unsalted butter
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2/3 cup (4 2/3 ounces) sugar
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2 pounds firm but ripe plums or pluots, washed, pitted, and sliced into 1/2-inch slices
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1/2 vanilla bean, split lengthwise
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Pinch of fine sea salt
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3 cups (15 ounces) all-purpose flour
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2 teaspoons baking powder
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1/2 teaspoon baking soda
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1 1/2 teaspoons ground cinnamon
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1 teaspoon ground ginger
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1/2 teaspoon ground nutmeg
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1/4 teaspoon ground cloves
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1 teaspoon fine sea salt
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2 cups (15 ounces) firmly packed dark brown sugar
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1/2 cup (4 ounces) unsalted butter, at room temperature
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1/2 cup canola oil
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4 eggs, at room temperature
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1 1/2 cups buttermilk, at room temperature
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1 3/4 cups (7 ounces) sifted confectioners' sugar
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2 tablespoons whole milk
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1 tablespoon pure vanilla extract