Preheat oven to 350°. In a large bowl, cream 1 cup granulated sugar with butter until light and fluffy, about 3 minutes. Mix in egg and molasses.
In a medium bowl, stir together flour, baking soda, and spices. Add to butter mixture and blend well.
Fill a shallow bowl with granulated sugar. Break off walnut-size pieces of dough and roll into balls; roll balls in sugar. Arrange on greased cookie sheets and bake until golden brown, about 10 minutes. Transfer to cooling racks.
Meanwhile, make glaze: Combine powdered sugar with 1 tbsp. water and stir until smooth, then stir in lemon juice. Drizzle glaze over cookies.
Note: Nutritional analysis is per cookie.