Chocolate Caramel Slices

I ran across this recipe on the Bon Appetit blog (www.bonappetit.com).  It is a take on a traditional Australian dessert.  It has a buttery crust topped with caramel, then a layer of chocolate ganache.  What put it over the top for me was a sprinkling of kosher salt on the chocolate.  I love the contrast between salty and sweet.  It's a very easy recipe, but do plan ahead.  You'll want the crust to cool comlpetely and after the three steps are finished, it will need to be refrigerated to set up.

CHOCOLATE CARAMEL SLICES

Crust
1 cup flour
1/4 light brown sugar
2 tsp cornstarch
1/4 tsp salt
1/2 cup (1 stick) chilled unsalted butter, cut into 1/2" cubes
1 Tbsp ice water
1 large egg yok

Caramel Topping
one 14-oz can sweetened condensed milk
1/2 cup light brown sugar
6 Tbsp (3/4 stick) unsalted butter, diced
2 Tbsp dark corn syrup (I used 1 1/2 Tbsp light corn syrup and 1/2 Tbsp molasses)
1 tsp vanilla

Chocolate Glaze
6 oz bittersweet or semi-sweet chocolate, chopped
3 Tbsp whipping cream
Flaked or kosher salt

PREPARATION:

For Crust:
Preheat oven to 350.  Butter 11x7x2 metal or 9x13 glass baking dish.  Blend first 4 ingredients in processor.  Add butter.  Pulsing, blend until coarse meal forms.  Add 1 Tbsp ice water and egg yolk.  Blend until moist clumps form.  Press dough onto bottom of pan; pierce all over with a fork.  Bake until golden, piercing if crust bubbles, about 20 minutes.  Cool completely on a wire rack.

For Caramel Topping:
Whisk first 5 ingredients in medium saucepan over medium heat until sugar dissolves, butter melts, and mixture comes to a boil.  Attach candy thermometer to the side of the pan.  Boil gently until caramel is thick and temperature registers 225 degrees F, whisking constantly, about 6 minutes.  Pour caramel evenly over crust; cool 15 minutes to set.

For Chocolate Glaze:
Meanwhile, melt chocolate with cream in microwave in 15-second intervals, stirring occasionally.  Spread chocolate over warm caramel; sprinkle with sea salt.  Refrigerate until chocolate is set, at least one hour.