Preparation for Crust:
Mix crumbs, 1/3 cup nuts, sugar and margarine until blended. Reserve remaining nuts for garnish.
Press crust evenly into bottom and sides of 8- or 9-inch pie plate.
Bake for 11-12 minutes, or until brown and crisp.
Slice bananas; toss with lemon juice to prevent browning; set aside
Mix milk and sour cream in bowl.
Whisk in pudding; allow 5 minutes to thicken and set.
Meanwhile, using electric mixer, beat cream cheese until fluffy.
Fold cream cheese into pudding mixture followed by bread then banana slices; mix well. Pour into crust.
Garnish top with nuts.
Chill at least 3 hours. Serve.