01 -
Heat your oven to 350 degrees F. Put foil in a 9x13-inch baking pan and spray it well with cooking spray.
02 -
Beat the butter with both sugars in a big bowl using an electric mixer for 2 minutes till light and fluffy. Mix in eggs, vanilla, salt and baking soda until smooth, making sure to scrape down the bowl sides when needed. Switch to low speed and mix in flour just until combined. Add chocolate chips and stir them through.
03 -
Push about three-quarters of your cookie mixture into the pan you've lined.
04 -
Melt the caramels with condensed milk in a medium pot over medium-low heat, stirring often until completely smooth.
05 -
Pour most of the caramel (about three-quarters) over the cookie layer. Drop small teaspoon-sized bits of the leftover cookie dough on top of the caramel. Keep any extra caramel for topping ice cream later!
06 -
Pop it in the oven for 25 to 30 minutes until the middle just sets.
07 -
Sprinkle with sea salt flakes. Let it cool totally in the pan before cutting it into bars.