crush 1 box of vanilla wafers, placing 1/2 on the bottom of a 9″x13″ cake pan. set aside the remaining crumbs for later. cream 1 cup of butter OR crisco, 3 cups of confectioners sugar, and 4 eggs, one at a time. beat until smooth and pour into pan on top of vanilla wafer crumbs. drain an 18 or 20 ounce can of crushed pineapple. add 1 box (2 envelopes) of dream whip with pineapples and pour on top of other mixture. sprinkle the remaining vanilla wafer crumbs on top and place in the refrigerator.