Lemon-Honey Tart with Salted Shortbread Crust

INGREDIENTS

• 2 teaspoons cornstarch
• 1 1/4 teaspoons kosher salt
• 2 large egg yolks
• 2/3 cup powdered sugar
• 1 3/4 cups all-purpose flour
• 1/4 teaspoon kosher salt
• Nonstick vegetable oil spray
• 1 cup sugar
• 1/4 cup all-purpose flour
• 3 tablespoons honey
• 2/3 cup fresh lemon juice, preferably Meyer lemon
• 1 tablespoon finely grated lemon zest
• 1 Meyer lemon or thin-skinned regular lemon
• 3 large eggs
• 3/4 cup (1 1/2 sticks) unsalted butter, room temperature, cut into 1" pieces
• 2 tablespoons cornstarch