Gingerbread-Cookie Trees

INGREDIENTS

• 1 cup (2 sticks) unsalted butter, softened
• 1 cup packed dark-brown sugar
• 1 large egg, room temperature
• 1/2 cup dark unsulfured molasses
• 2 1/4 teaspoons ground cinnamon
• 2 teaspoons ground ginger
• 1 teaspoon ground allspice
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 4 cups all-purpose flour, plus more for work surface
• Cream Cheese Frosting
• Confectioners' sugar, for dusting