Mix flour , butter & pecans together & spred in a 9x13 pan.
Bake @ 350º 15 min.
Mix together cream cheese, 1 c. powdered sugar,
& 1 c.cool whip.
Put in crust.
Beat pudding, 3 c. milk & vanilla until thickened.
Add to the above.
Top with more cool whip & hershy bar choc. curls.
Refrigerate until cool.