INGREDIENTS
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Cake:2/3 cup sugar1/2 cup sour cream1 egg2 tablespoons unsalted butter, softened2 mashed super ripe bananas (about 3/4 cup)1 teaspoon pure vanilla extract1 cup flour1/4 teaspoon salt1/2 teaspoon baking soda
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Frosting:2 tablespoons unsalted butter, softened1/4 cup heavy cream1/2 teaspoon vanilla bean paste (or equal amount of pure vanilla extract)1 1/4 cups confectioner's sugar