Preheat your oven to 350°F (175°C) and prepare a baking sheet with parchment paper.

In a large mixing bowl, cream together the unsalted butter and granulated sugar until light and fluffy.

Mix in the vanilla extract and large egg until fully combined.

In a separate bowl, whisk together the flour, baking soda, salt, ground cinnamon, and ground nutmeg.

Gradually combine the flour mixture with the wet ingredients until a soft dough forms.

Roll the dough into 1-inch balls and space them 2 inches apart on the prepared baking sheet.

Bake for 10-12 minutes until edges are golden and centers are set yet soft.

While cooling, heat heavy cream until simmering, then whisk in brown sugar and cornstarch, cooking until thickened.

Spoon the cream topping over each cooled cookie and broil for 1-2 minutes until caramelized.

Let cool completely before serving.