01 - Preheat oven to 350°F (180°C) and line a baking sheet with parchment paper.
02 - In a large bowl, cream together the butter, granulated sugar, and brown sugar until light and fluffy.
03 - Beat in the egg and vanilla extract until well combined.
04 - In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add to the wet ingredients and mix until just combined.
05 - Divide the dough into 16 equal pieces. Flatten each piece in your palm, place a piece of chocolate in the center, and fold the dough around it. Roll gently to seal.
06 - Place the cookie balls on the prepared baking sheet, spacing them about 2 inches apart.
07 - Bake for 10-12 minutes, until edges are golden but centers still look soft.
08 - Cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.