INGREDIENTS
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1½ cups all-purpose flour
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⅔ cup unsweetened cocoa powder
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2 teaspoons baking powder
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1 teaspoon baking soda
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½ teaspoon salt
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½ cup buttermilk
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1 cup canned pumpkin
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2 teaspoons pure vanilla extract
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¾ cup (1½ sticks) unsalted butter, room temperature
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1 cup granulated sugar
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1 cup firmly packed dark brown sugar
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3 large eggs
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1 large egg yolk
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6 ounces cream cheese, room temperature
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2¼ cups confectioners’ (powdered) sugar, divided
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2¼ teaspoons unsweetened cocoa powder
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¼ teaspoon ground cinnamon
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¾ teaspoon pure vanilla extract
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1½ cups whipping (heavy) cream
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¼ teaspoon orange food color
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4 ounces bittersweet chocolate, chopped into small pieces
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1 tablespoon unsalted butter
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½ cup whipping (heavy) cream
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3 tablespoons light corn syrup