PECAN DELIGHT BLUEBERRY DESSERT 1 cup flour                      1/4 cup brown sugar 1/2 cup pecans               1 stick butter Mix above ingredients and press into 9x13 pan.  Bake at 325 F.  for 15 min. or until brown: Prepare and spread over cooled crust: Cream 8 oz. cream cheese with 3/4 cup sugar Add 1/2 of an 8 oz. pkg.  of whipped topping and 1 teaspoon vanilla  extract; Spread with the following topping: 4 cups blueberries                1 cup sugar 2 Tablespoons cornstarch    1 Tablespoon lemon                                                                 juice   Mix all ingredients and cook over medium heat until  juice thickens.  Chill ; Spread remaining whipped topping over dessert and chill.