Note: Don’t make the frosting until the cakes are cooled, and use the frosting as soon as it is ready. If the frosting gets too stiff to spread easily, wrap the mixer bowl with a towel soaked in hot water adn mix on low speed until the frosting is
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12 Tablespoons (1 1/2 sticks) unsalted butter, very soft, plus extra for greasing pans
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1 3/4 cups all-purpose flour, plus extra for dusting pans