Preheat the oven to 375°F (190°C) and line baking sheets with parchment paper or silicone mats.

In a large bowl, beat together the butter, granulated sugar, brown sugar, and peanut butter until smooth and creamy.

Add the egg and vanilla extract, mixing well until combined.

In a separate bowl, whisk the flour, baking soda, and salt. Gradually stir the dry ingredients into the wet mixture until a soft dough forms.

Roll tablespoons of dough into balls, coat each ball in granulated sugar, and place them on the prepared baking sheets about 2 inches apart.

Bake the cookies for 8-10 minutes, or until the edges are lightly golden.

Remove from the oven and immediately press a chocolate kiss into the center of each cookie. The edges may crack slightly.

Allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.