Triple Berry Pie - Nordic Ware

Ingredients

• Pie Crust
• 4 cups flour
• ½ tsp salt
• 1½ cups shortening
• 3/4 cup cold water
• 1 tsp vinegar
• 1 egg
• Filling
• 3 cups raspberries
• 2 cups strawberries, stems removed and sliced
• 3 cups blueberries
• 1 ½ cups sugar
• ¾ cup corn starch
• 2 Tbsp lemon juice
• 1/2 tsp salt
• 1 Tbsp butter, room temperature
• Course sugar for crust topping