Another fruitful cookie/dessert  with fresh ripe blackberries.  Perfect for summer, winter, ....anytime!!!   Its easy and pretty---and tastes so good its addicting.  I adapted this recipe from The Pastry Queen.  INGREDIENTS CRUST & TOPPING 3 cups of AP flour 1   1/2  cup sugar 1/4 tsp salt 1  1/2 cups  (3 sticks) butter zest 2 lemons BLACKBERRY FILLING 4 eggs 2 cups sugar 1 cup sour cream 3/4  tsp AP ...