Preheat oven to 350 degrees. In a medium bowl, whisk together flour, baking soda, cinnamon, nutmeg, and salt. In a shallow bowl, place 1/2 cup sugar; set aside.
With an electric mixer, beat butter and remaining cup of sugar until combined. Beat in egg and then molasses until combined. Reduce speed to low; gradually mix in dry ingredients, just until a dough forms.
Pinch off and roll dough into balls, each equal to 1 tablespoon. Roll balls in reserved sugar to coat.
Arrange balls on baking sheets, about 3 inches apart. Bake, one sheet at a time, until edges of cookies are just firm, 10 to 15 minutes (cookies can be baked two sheets at a time, but they will not crackle uniformly). Cool 1 minute on baking sheets; transfer to racks to cool completely. Store in an airtight container
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