Preheat oven to 300°.
Beat:
1 stick butter, room temperature
1/2 C powdered sugar
1 t vanilla
Add in and beat:
1 C flour
Add 1 T water at a time until just moist (about 2-3 T).
Add 1 T water at a time until just moist (about 2-3 T).
Press into a greased lined foil 8x8 pan. (I used a spring form pan.) Prick crust with fork all over. Bake 35 to 45 minutes until golden. Immediately after removing from oven, run a knife around edges. Cool completely.
Melt in the microwave at 1 minute bursts:
10 oz caramels
1 T & 1 1/2 t heavy cream
Pour over crust and chill for 30 minutes.
Gently melt in microwave for 1 minute or more until melted:
8 oz milk chocolate chips
Add 1 1/2 t vegetable shortening if the chocolate is too thick to pour.
Pour over caramel and spread to edges. Chill.