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

Cream together the softened butter and granulated sugar until light and fluffy (3-5 minutes).

Add vanilla extract and egg, mixing until incorporated.

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

Gradually add dry mixture to the wet ingredients until just combined.

Shape the dough into 1-inch balls and place them on the baking sheet.

Flatten each dough ball to about 1/2 inch thick.

Bake for 10-12 minutes until edges are golden.

Cool on the baking sheet for 5 minutes before transferring to a wire rack.

Heat heavy cream in a saucepan, then whisk in brown sugar and cornstarch until thickened (3-5 minutes).

Dollop the cream mixture onto each cooled cookie.

Broil cookies for 1-2 minutes until the sugar topping caramelizes.

Allow to cool before serving.