INGREDIENTS
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Butter, for greasing the baking sheet
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1/3 cup powdered sugar
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1 1/4 cups all-purpose flour
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1 tablespoon ground cinnamon
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1 teaspoon baking powder
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1 1/4 teaspoons fine sea salt
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1 1/4 cups sugar
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3 large eggs, at room temperature
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1 cup canned pumpkin puree
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1/2 cup semisweet chocolate chips, such as Ghirardelli
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1 tablespoon unsalted butter, at room temperature
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1 cup (8 ounces) mascarpone cheese, at room temperature
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Special equipment: a clean kitchen towel