Recipe adapted from Susan G. Purdy Makes 1 Bundt Cake INGREDIENTS 2 tablespoons unsalted butter, softened 31⁄3 cups flour 1½ teaspoon baking powder ¼ teaspoon baking soda ¾ teaspoon salt 2 teaspoons ground cinnamon ¾ teaspoons ground ginger ½ teaspoon ground allspice 1½ cups sugar 1¼ cups dark brown sugar, packed 1 cup canola oil…