Preheat the oven to 350°.
Cream together the butter, both sugars, eggs and vanilla.
In a separate bowl, sift together the flour, salt and baking soda.
Mix the dry ingredients with the creamed mixture. Mix well.
Chop the Hershey's Chocolate Bar.
Fold the chopped chocolate bar and Guittard baking chips into the cookie dough.
Scoop onto a greased cookie sheet.
Bake at 350° for 9-11 minutes or until the tops are no longer glossy.
Cool on the pan. Store in an airtight container for up to 3 days.
