Grandma's Special Apple Raspberry Pie - Sarai Chinwag

Ingredients

• 1 double crust pie dough (store-bought or homemade)
• 4 cups sliced tart apples (Granny Smith or similar)
• 1 cup fresh raspberries
• 3/4 cup granulated sugar
• 1/4 cup brown sugar
• 2 tablespoons all-purpose flour
• 1 teaspoon ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1 tablespoon lemon juice
• 1 tablespoon butter, cut into small pieces
• 1 egg, beaten (for egg wash)
• 1 tablespoon coarse sugar (optional, for sprinkling)