Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.

Unwrap the Hershey Kisses and set aside in a bowl.

In a large mixing bowl, combine sugar and softened butter, beating until light and fluffy. Add the egg and vanilla, mixing well.

In a separate bowl, whisk together flour and baking soda, then add this to the creamy mixture.

Gradually mix in the dry ingredients until a soft dough forms.

Roll the dough into 1-inch balls and coat in sanding sugar, placing them on the baking sheet.

Bake for about 7 minutes until lightly golden. Remove from oven but keep them on the tray.

Immediately press a Hershey Kiss into the center of each cookie.

Cool completely on the baking sheet before transferring to a wire rack.