Heat oven to 450°F. Make pie crust as directed on box for One-Crust Baked Shell, using 9-inch glass pie plate--except press pecans in bottom of crust. Generously prick crust with fork. Bake 9 to 11 minutes or until light golden brown. Cool 15 minutes.
Meanwhile, in 1-quart saucepan, mix granulated sugar and cornstarch. Stir in water, butter and egg yolk. Cook over medium heat, stirring constantly, until mixture boils and thickens. Boil 1 minute. Remove from heat. Stir in lemon juice. Pour into cooled baked shell. Refrigerate 1 hour.
In small bowl with electric mixer, beat cream cheese, powdered sugar and lemon extract on medium speed until smooth. On low speed, beat in whipped topping until well blended. Beat in milk until topping mixture is smooth and spreading consistency. Spread thin layer of topping around edge of crust over cooled filling.
Reserve 8 whole raspberries for garnish. Arrange remaining raspberries over top of filling. Spoon and gently spread remaining topping over raspberries. Garnish with mint sprigs and reserved raspberries. Refrigerate 2 hours before serving. Cover and refrigerate any remaining pie.