FIRST LAYER:

1 stick butter, melted
1/2 tsp. vanilla flavoring
1 c. plain flour
1 c. chopped pecans

Mix well and press into bottom of 8x12 inch pan. Bake 15 minutes in 350 degree oven. Must be cold before adding other layers.

SECOND LAYER:

1 (8 oz.) cream cheese
1 c. powdered sugar

Mix and spread over first layer.

THIRD LAYER:

3 1/2 c. cold milk
2 sm. boxes instant vanilla or chocolate

Mix and spread over second layer.

FOURTH LAYER:

Spread rest of Cool Whip on top and refrigerate.