Heat oven to 450°F. Prepare crust according to package directions for unfilled one-crust pie using 9-inch pie pan. Press pecans into bottom of pie crust-lined pan. Generously prick crust with fork. Bake for 9 to 11 minutes or until light golden brown. Cool completely.

In small saucepan, combine sugar and cornstarch; blend well. Stir in water, margarine and egg yolk. Cook over medium heat until mixture boils and thickens, stirring constantly. Boil 1 minute. Remove from heat. Stir in lemon juice. Pour into cooled crust. Refrigerate 1 hour.

In small bowl, beat cream cheese, powdered sugar and lemon extract until smooth. Beat in whipped topping at low speed until well blended. Add milk; mix until smooth and of spreading consistency. Spread thin layer of topping mixture around edge of crust. Reserve 4 raspberries for garnish. Arrange remaining raspberries over top of filling. Spread remaining topping over raspberries. Garnish with mint sprigs and reserved raspberries.