Ingredients

Instructions

1. 1
   Preheat oven to 375°F. Line two cookie sheets with parchment paper and set aside.
2. 2
   In a large mixing bowl, beat butter on medium-high speed for 30 seconds or until smooth. Add sugar, cocoa powder, baking soda and salt. Beat until well combined, scraping down the sides of the bowl occasionally. Beat in egg and vanilla until combined. Slowly mix in flour.
3. 3
   Roll dough into 1-inch balls; roll in sprinkles to coat, if desired. Place balls 2 inches apart on prepared cookie sheets. Use your thumb to make an indentation in the center of each cookie.
4. 4
   Bake cookies in preheated oven for 7-8 minutes, or until edges are firm. Transfer cookies to a cooling rack and immediately press a chocolate kiss into the center of each cookie.