Millionaires Shortbread Recipe

Preheat oven to 350 F. Grease 12 x 8 " pan. Beat butter and sugar until light and fluffy. Add flour and mix to form a soft dough. Knead lightly then press into pan, smoothing base. Prick with a fork and bake for 30-35 minutes. Allow to cool. Place filling ingredients in a saucepan and heat slowly, stirring, until sugar has dissolved. Bring to a boil and simmer for 7-10 minutes, stirring until it thickens. Cool and pour over base and leave to set. Break up chocolate and add cream; place in microwave to melt 2 minutes. Spread over caramel and let set.