Blackberry Cheesecake Pie - Olga's Flavor Factory

Ingredients

• 1/3 cup ice water
• 3 Tablespoons sour cream
• 2 1/2 cups all purpose flour
• 1 Tablespoon granulated sugar
• 1/2 teaspoon salt
• 16 Tablespoons butter, really cold, preferably cut into 1/4 inch pieces and frozen for 10-15 minutes
• 8 oz cream cheese, softened to room temperature
• 1/4 cup granulated sugar
• 1 egg
• 1/4 teaspoon lemon zest
• 1 teaspoon vanilla extract
• 1 1/2 Tablespoons cornstarch
• 4-5 cups fresh blackberries (you can also use other fresh berries, like blueberries, raspberries, strawberries or cherries)
• 1/2 -3/4 cup granulated sugar
• 2 Tablespoons lemon juice
• 5 Tablespoons cornstarch
• 2 Tablespoons butter, cold, cut into 1/4 inch cubes
• 1 egg, lightly whisked with 1 Tablespoon water or milk
• 2 -4 teaspoons of sugar to sprinkle on top of the top crust