Preheat oven to 340 degrees F. Line and grease a 9'' x 13'' pan with non-stick spray and set aside.
In a mixing bowl mix flour, baking soda, and salt and set aside.
In a large mixing bowl cream butter for about 5 minutes.
Add the brown sugar in and mix until combined.
Add in eggs one at a time until they are just mixed, then add in the vanilla.
Slowly add in the flour. Mix until just combined, do not overmix of the blondie will be dry.
Spread batter into prepared pan. This was a little difficult cause the batter is thick the parchment paper kept moving. I used an offset spatula and it helped.
Sprinkle chocolate chips evenly on top of batter.
Bake 25-30 minutes at 350 degrees or until set in the middle and golden brown on top.
