Preheat oven to 350°F and line a 8x8 baking pan with parchment paper and set aside.
In a large bowl whisk together flour, salt and baking soda and set aside.
With mixer mix together the butter and both sugars for about 5 mins.Add the egg and vanilla and mix for another minute.
With mixer on low speed slowly add in your bowl of dry ingredients plus the chocolate chips and candy you are using. Mix until just combined.
Pour batter into prepared pan a bake for 25-30 mins. while center is still a little gooey in middle, don't want to over bake.
Let cool in pan for 10 mins. before transferring to cooling rack. Cool for another 20 mins. before cutting into.
Notes
These cookies bars keep well on counter covered for 2 days or in fridge for up to 4 days. You can also cut them and freeze in zip lock bag or airtight container for up to 2 months.This recipe is very adaptable, you may use and candy you like and even add nuts if you like. You can also top off with extra candy pieces before baking and once you remove from oven.Remember key is to not overbake these I usually take them out after 25 mins. of baking for a gooey, chewy bar. Leave in longer it you like more of a crunchy bar.