In a bowl, combine flour, pecans and butter. Press into an ungreased 13x9-in. baking dish. Bake at 350° for 18-20 minutes. Cool on a wire rack.
In a bowl, beat cream cheese and confectioners' sugar. Fold in half the whipped topping; spread over crust. In another bowl, whisk milk and pudding mix for 2 minutes. Let stand for 2 minutes or until soft-set.
Spread over cream cheese layer. Cover with remaining whipped topping. Decorate with strawberries and blueberries to resemble a flag. Chill for at least 1 hour before serving.
Test Kitchen Tips
Styling tip: For clean delineation between stripes, place cut strawberry halves on a paper towel before assembling so they don't bleed into the topping.
If you prefer, substitute raspberries for strawberries.