Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper if available.

In a small bowl, stir together flour, baking soda, and salt.

In a larger bowl, cream together the softened butter, peanut butter, granulated sugar, and brown sugar until fluffy and lighter in color.

Beat in the egg and vanilla extract.

Add the dry ingredients and mix until there are no streaks of flour.

Scoop the dough and roll into 1-inch balls, then roll each ball in granulated sugar.

Place the dough balls on the prepared baking sheet with some space between them.

Bake for 8 to 10 minutes, until the edges look set but the center is still soft.

Immediately press a chocolate kiss into the center of each cookie after removing them from the oven.

Let cookies cool on the pan for a few minutes before transferring to a rack or plate to cool completely.