Heat oven to 375°F. Mix flour, 2 tablespoons granulated sugar and 1/4 teaspoon salt in medium bowl. Cut in butter, using pastry blender or crisscrossing 2 knives, until particles are size of small peas. Stir in pecans. Reserve 1/4 cup crumbs for topping; set aside. Sprinkle remaining crumbs with cold water, 1 tablespoon at a time, tossing with fork until all flour is moistened and pastry almost leaves side of bowl.