"This cake can be baked the day before, covered loosely with foil, and kept at room temperature. Make the whipped cream topping just before serving...."
INGREDIENTS
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2 cups all-purpose flour, plus more for dusting
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2 teaspoons baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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1 1/2 sticks (12 tablespoons) unsalted butter, room temperature, plus more for pan
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1/2 cup packaged dark-brown sugar
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2 large eggs
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1/2 cup plus 2 tablespoons pure maple syrup, plus more for drizzling
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2 teaspoons pure vanilla extract
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1 cup sour cream
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1/2 cup heavy cream