FIRST LAYER; 1C.PECANS,CRUSHED, 1C. FLOUR, 1 STICK BUTTER,MELTED. MIX TOGETHER AND PRESS IN A 9X13  BAKING PAN. BAKE AT 400 DEGREES FOR 15 MINUTES. SECOND LAYER; 1-12OZ. COOL WHIP, 1-9OZ. CREAM CHEESE, 1C. POWDERED SUGAR. BLEND CREAM CHEESE,SUGAR, THEN COOL WHIP. SPREAD OVER COOL CRUST. THIRD LAYER; 2-3OZ. BOXES INSTANT PUDDING ( 1-VANILLA, 1- CHOCOLATE) 3C. MILK, SPREAD OVER 2ND LAYER. FOURTH LAYER; 1-12OZ. COOL WHIP- SPREAD OVER TOP OF PUDDING. SPRINKLE WITH PECANS OR SHAVED HERSHEY BAR.