Rustic Heirloom Apple Pie - Foraged

Ingredients

• 6 cups thinly sliced heirloom apples
• 3/4 cup granulated sugar
• 2 tablespoons all-purpose flour
• 2 teaspoons ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1 tablespoon lemon juice
• 2 1/2 cups all-purpose flour (pie crust)
• 1 teaspoon salt (pie crust)
• 1 teaspoon sugar (pie crust)
• 1 cup unsalted butter, chilled and diced (pie crust)
• 4-6 tablespoons ice water (pie crust)
• 1 egg, beaten