Preheat the oven to 375°F and line a baking sheet with parchment paper.
In a medium bowl, whisk together flour, baking soda and salt. Set aside.
In a large bowl, cream together butter, brown sugar and granulated sugar until the mixture is fluffy and lightened in colour.
Mix in the egg until mixture is smooth.
Mix in vanilla extract, cinnamon and nutmeg.
Add the flour mixture and mix until just combined.
Divide the dough into 6 balls using a 1/4 cup scoop, placing them evenly spaced apart on the baking sheet. Leave at least 3 inches (7.5 cm) between each cookie).
Bake for 8-10 minutes, or until the cookies are golden around the edges.
Let cool on the baking sheet.