INGREDIENTS
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8 ounces cream cheese, at room temperature
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1 teaspoon vanilla extract
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2 large egg whites, at room temperature
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1/2 cup sugar
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1 1/2 cups plus 3 tablespoons cake flour
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1 1/2 teaspoons baking soda
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1/2 teaspoon kosher salt
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1 stick plus 2 tablespoons unsalted butter, at room temperature
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1 cup plus 6 tablespoons sugar
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2 teaspoons vanilla extract
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3 large eggs, at room temperature
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3 very ripe bananas, mashed