Peach-Raspberry Slab Pie

INGREDIENTS

• 2 1/4 pounds (about 9) peaches, peeled, pitted, and cut into thin wedges
• 1 cup (about 6 ounces) raspberries
• 1 cup granulated sugar
• 1/4 cup cornstarch
• 1 tablespoon fresh lemon juice
• 1/8 teaspoon salt
• 2 recipes Slab Pie Pate Brisee
• All-purpose flour, for dusting
• Vegetable-oil cooking spray
• 1 large egg yolk
• 1 tablespoon heavy cream
• Fine sanding sugar, for sprinkling