Remove frozen yogurt from freezer to soften. Spray 8-inch square pan with cooking spray. In small bowl, mix cookie crumbs and sugar. Stir in butter until crumbly and well blended. Press in pan. Freeze about 10 minutes or until set.
Spread slightly softened yogurt evenly over crust. Freeze about 1 hour or until firm.
In small bowl, mix caramel topping and pecans. To serve, top each serving with generous 2 tablespoons whipped topping. Carefully pour 1 tablespoon caramel mixture over top.