INGREDIENTS
For the shortbread::
1/2 cup
unsalted butter, at room temperature
1/2 cup
sugar
1
egg
1 tsp
vanilla extract
5 oz
flour
For the caramel filling::
1/4 cup
sugar
1/4 cup
unsalted butter (4 tbsp)
14 oz
can sweetened condensed milk
For the chocolate glaze::
12 oz
bag semisweet chocolate chips
2 tbsp
vegetable oil
sea salt for sprinkling, if desired