Preheat oven to 350 degrees Fahrenheit. Line a baking sheet with parchment paper and set aside.
Melt butter and set aside to cool.
Combine the flour, baking soda, spices, and salt in a large bowl and whisk until fully mixed.
Make a well in the center of the dry ingredients and pour in the melted butter, brown sugar, molasses and egg yolk. Whisk the ingredients a couple times until the egg yolk is dispersed.
Switch to a spoon and continue mixing. The dough will be very thick.
Scoop 2 tablespoons dough and roll between your palms to form a ball.
Roll cookie ball in granulated sugar and place on parchment lined cookie sheet.
Bake 10-12 minutes. Cookies will be soft on top when you pull them from the oven.
Let cookies cool on baking sheet for 5 minutes before transferring them to a wire rack to cool completely.
Notes
Can chill dough
Store in an airtight container for 2 weeks at room temperature