Oatmeal Molasses Cookies are the Holiday Cookie to End all Holiday Cookies

Name: Oatmeal Molasses Cookies are the Holiday Cookie to End all Holiday Cookies
Ingredients: 1 stick ( 4 ounces ) unsalted butter , melted and cooled; 1/2 cup ( 106 g ) brown sugar; 1/4 cup ( 50 g ) granulated sugar , plus more for sprinkling; 1 large egg; 1/4 cup molasses; 1 teaspoon vanilla extract; 1 2/3 cups ( 200 g ) all-purpose flour; 2/3 cup ( 60 g ) rolled oats; 1 teaspoon baking soda; 1 teaspoon ground ginger; 1/2 teaspoon ground cinnamon; 1/2 teaspoon ground nutmeg; 1/2 teaspoon salt