Hi, there. Long time no see, eh? Sorry for neglecting the blog for so long. I swear it wasn't on purpose, things just were pre~tty crazy at this side of the world. But before you forget about me, I bring you this sweet treat.  It's pretty darn delicious - not to mention addicting! The original recipe calls for fleur de sel, but I didn't have it on hand so I just ommited it. And it turned out delicious all the same. I added some nuts to give it some crunch. Yum! Next time I'd add more caramel sauce, though 'cause I thought my layer was too thin and I couldn't taste the caramel. These bars are a-ma-zing, I'm salivating just thinking about it. Do me a favor and try it as soon as possible, please! All the changes I've made are in italics.
Hope to see you soon!
~Ana.
Cookie Bars
2 1/8 cups all-purpose flour
1/2 teaspoon baking soda
1/2 teaspoon salt
170g (12 tablespoons) unsalted butter, melted and cooled slightly
1 cup light brown sugar
1/2 cup granulated sugar - used refined sugar
1 large egg
1 large egg yolk
2 teaspoons vanilla extract - used 1 teaspoon vanilla essence
1 1/4 cups chocolate chips
6 tablespoons salted caramel sauce*
fleur de sel, for sprinkling - didn't use
1/4 cup cashew nuts, chopped
*Caramel sauce
Tracey used a home made caramel sauce but I was lazy and melted 140g of caramel candy with 2 tablespoons heavy cream using the microwave.
To make the cookie bars: Preheat oven to 325 F/160ÂșC with a rack in the lower 
third.  Line an 8x8-inch baking dish with aluminum foil, leaving an 
overhang on opposite sides to allow you to lift the bars out after 
baking. Spray the aluminum foil with nonstick cooking spray. 
In a medium bowl, whisk the flour, baking soda and salt together. In a 
second bowl, combine the butter and both sugars, whisking until 
combined. Add the egg, egg yolk and vanilla and whisk to completely 
incorporate. Add the dry ingredients to the wet, and use a rubber 
spatula to fold the dry into the wet just until combined. (The batter 
will be quite thick.)  Use the rubber spatula to fold in the chocolate 
chips and nuts, if using.
Transfer half of the batter to the prepared pan, pressing it into an 
even layer in the bottom.  Pour the caramel sauce over the cookie dough,
 leaving just a little space around the edges.  Use a small cookie scoop
 to dollop the remaining cookie dough over the salted caramel.  Press 
down gently with your fingertips to distribute.  It's fine if the 
caramel layer isn't completely covered - it will spread to cover as it 
bakes.  Sprinkle the top with fleur de sel.  Bake for 35-40 minutes, or 
until the bars are golden brown and slightly firm to the touch. The bars
 will begin to pull away from the sides of the pan when they're done. 
From here.