Peanut Butter Blossoms

In the bowl of stand mixer fitted with a paddle attachment or in a large mixing bowl with an electric hand mixer, cream the unsalted butter, granulated sugar, and brown sugar until combined and smooth. Add in the peanut butter, egg, and vanilla extract and mix until well combined. Add in the all-purpose flour, baking soda, and salt and mix on low speed until the cookie dough comes together.
Portion the cookie dough using a small cookie scoop (1 tablespoon). Chill the dough balls for at least 30 minutes.
Preheat the oven to 350℉ (177℃). Line baking sheet pans with silicone baking mats or parchment paper.
Roll the chilled peanut butter cookie dough balls to create smooth dough balls and then roll in the additional granulated sugar. Place the dough balls onto the prepared baking pan allowing space for spreading.
Bake the cookies for about 9 to 10 minutes. The cookies may appear slightly underbaked. Immediately press an unwrapped Hershey's kiss in the center of each cookie. Cool the cookies on the pan for 2 minutes and transfer to a wire rack to cool completely.