Cream the butter and sugar with a paddle attachment of an electric mixer until light and fluffy. Add the eggs one at a time, beating after each addition. Mix in the molasses.
Whisk the flour, spices, baking soda, and salt, together in a small bowl. Add the flour mixture to the butter mixture and beat on low until just combined.
Using a small ice cream scooper or spoon, and scoop out heaping tablespoons. Roll each portion into a ball and roll the ball in the sugar in a small bowl.