Preheat oven to 375 degrees F. Mix together 1/2 cup sugar, brown sugar, butter and peanut butter on until well mixed.
Add egg, vanilla, and salt to the peanut butter mixture.
Add flour and baking soda.
Using a cookie scoop, scoop cookie and carefully roll into sugar. Bake for 8-10 minutes. While the cookies are still warm place a small chocolate candy in the center. Allow to cool completely.