Chocolate Caramel Tart

Chocolate Caramel Tart
Pi Day dawned bright and sunny, and I realized I didn't have the ingredients on hand for a new cream pie I had been planning to make and surprise my husband with that evening, so I inspected the fridge and pantry to see what I might come up with...  We always have butter, sugar and flour, of course.  Bittersweet chocolate, sweetened condensed milk, and luckily, cream.  And with just those few ingredients, this tart was born.