INGREDIENTS
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Nonstick cooking spray, for the baking sheet and molds
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1 sheet frozen puff pastry (from a 17.3-ounce package), thawed in the fridge
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12 ounces cream cheese, at room temperature
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3/4 cup unsalted butter, at room temperature
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3 cups confectioners' sugar, plus more for garnish
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1/2 teaspoon kosher salt
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1/2 cup blackberry preserves
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Blackberries, for garnish
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Fresh mint leaves, for garnish