INGREDIENTS
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6 tablespoons canola oil
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1 vanilla bean, split lengthwise
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1 3/4 cups sugar
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1/2 cup unsalted butter, softened
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2 large eggs
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12 ounces cake flour (about 3 cups)
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2 teaspoons baking powder
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1/2 teaspoon salt
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1 cup nonfat buttermilk
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Cooking spray with flour (such as Baker's Joy)
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1 tablespoon unsalted butter
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1/4 cup sugar
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2 tablespoons 2% reduced-fat milk
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1/2 teaspoon vanilla extract