Caramel Apple Slab Pie

Ingredients

• 5 cups all-purpose flour
• 1/4 cup sugar
• 1 Tablespoon salt
• 1 pound (4 sticks) cold unsalted butter, cubed
• 12 to 16 Tablespoons ice cold water
• 1 egg
• 4 pounds apples*, peeled, cored and sliced
• 1/2 cup light brown sugar, packed
• 1/2 teaspoon cinnamon
• 1/4 teaspoon ground nutmeg
• 1/4 teaspoon ground ginger
• 1/8 teaspoon ground all-spice
• 1/8 teaspoon ground cloves
• 1 Tablespoon lemon juice
• 3 Tablespoons cornstarch
• 1/2 teaspoon salt
• 1 1/2 cups granulated sugar
• 1/4 cup water
• 1 teaspoon lemon juice
• 1 cup heavy cream
• 1 1/2 teaspoons coarse salt
• 1/2 teaspoon vanilla