3 Sticks butter

24 crushed graham crackers

1 Lb. powdered sugar

1 Tsp. vanilla

4 bananas

1 (No. 2) Can crushed

pineapple -- drained 32 Oz. Cool Whip

Line bottom of 9 x 12-inch pan with mixture of 1 stick margarine and 24 crushed graham crackers. Bake at 375 degrees for 8 to 10 minutes. Whip 2 sticks margarine, powdered sugar and vanilla; spread over graham cracker crust. Cut bananas, lengthwise; place over whipped mixture. Cover bananas with pineapple; cover all with Cool Whip. Chill overnight.