Wild Blueberry + Canadian Maple Pie - Canada's Food Island

Ingredients

• 2 2/3 cups all-purpose flour
• 1 tbsp granulated sugar
• 1 tsp salt
• 1/4 tsp baking powder
• 1 cup butter, cut into ½ inch pieces
• 1/2 cup cold water
• 1 tbsp lemon juice
• 6 cups PEI wild blueberries
• 1/2 cup maple syrup
• 1/4 cup granulated sugar, plus additional for sprinkling over the pie
• 1/3 cup cornstarch
• 1 lemon, zested
• 1 1/2 tbsp fresh lemon juice
• 1/2 tsp salt
• 1 tbsp unsalted butter, cut into small pieces
• 1 egg, beaten