1/2 gal. vanilla ice cream, softened
3 small boxes instant vanilla pudding
2 c. milk
1 large container Cool Whip
1 stick butter
Ritz crackers (2 sleeves), crushed

Mix melted butter and 1 1/2 sleeves Ritz crackers. Layer to form a crust to cover bottom of large square pan. Mix ice cream, pudding mix and milk with mixer on low speed. Pour over cracker crust. Top with Cool Whip. Sprinkle with remaining crumbs. Refrigerate at least 4 hours.