PREHEAT oven to 375°F. Beat butter and 1/3 cup sugar in large bowl with electric mixer on medium speed until well blended. Add flour; mix well. (Mixture will be crumbly.) Press firmly onto bottom and up side of 9-inch flan pan. Bake 12 to 15 min. or until lightly browned. Cool 20 min.
MEANWHILE, beat cream cheese, 1/4 cup sugar, the milk, lemon peel and juice in medium bowl with electric mixer on medium speed until well blended. Gently stir in whipped topping. Spread onto bottom of crust; top with blueberries.
HEAT jam in microwave for 20 to 30 seconds or just until warmed; pour through sieve to remove seeds. Gently spoon jam over blueberries. Refrigerate at least 30 min. before serving. Store leftover dessert in refrigerator.