INGREDIENTS
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Baking spray with flour
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9 ounces all-purpose flour (about 2 cups)
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1 teaspoon baking powder
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5/8 teaspoon salt, divided
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1 2/3 cups granulated sugar
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6 tablespoons butter, softened
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6 ounces 1/3-less-fat cream cheese
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2 large eggs
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1/4 cup canola oil
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2 tablespoons grated grapefruit rind
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1/2 teaspoon vanilla extract
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1/2 cup 2% reduced-fat milk
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1/2 cup fresh grapefruit juice
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1 1/4 cups powdered sugar