Chocolate Caramel Cookie Squares

When we were Christmas baking and making this recipe my sister was complaining that she thought this recipe was too much work and that it was not going to be worth it.  Boy was she wrong.  This recipe is worth every minute it takes to prepare.  I can't even begin to tell you how good it is.  This is definitely going to become a staple Christmas recipe!

Ingredients

Makes 16
FOR THE CRUST
4 1/2 ounces (9 tablespoons) unsalted butter, room temperature, plus more for parchment
1/4 cup packed light-brown sugar
1 1/2 cups all-purpose flour
1/4 teaspoon table salt
FOR THE CHOCOLATE CARAMEL
10 1/2 ounces milk chocolate, chopped (2 cups)
1 1/2 cups granulated sugar
1/4 cup water
3 ounces (6 tablespoons) unsalted butter
1 cup heavy cream
1/2 teaspoon table salt
1 tablespoon sea salt, preferably fleur de sel

Directions
Preheat oven to 350 degrees. Make the crust: Line a 9-inch square baking pan with parchment, leaving an overhang on all sides; butter parchment, excluding overhang. Beat butter and brown sugar on medium speed until pale and fluffy, about 3 minutes. Add flour and table salt, and beat until just combined.
Press dough evenly into pan, and bake until lightly browned, about 30 minutes.
Make the chocolate caramel: Place chocolate in a medium bowl. Heat granulated sugar and water in a small saucepan over medium-high heat, washing sides of pan with a wet pastry brush to prevent sugar crystals from forming, until amber, 10 to 12 minutes. Remove from heat. Add butter, cream, and table salt. Bring to a boil, stirring until smooth. Pour over chocolate. Let stand for 2 minutes. Stir to combine, and let stand until cool, about 10 minutes.
Pour mixture over crust. Refrigerate at least 4 hours, or overnight. Run a knife around edges; lift parchment to remove whole bar from pan. Sprinkle with sea salt. Trim edges, and cut into 16 bars. Bars can be refrigerated for up to 3 days.

Read more at Marthastewart.com: Chocolate-Caramel Cookie Bars - Martha Stewart Recipes