White Chocolate-Gingerbread Blondies

INGREDIENTS

• Vegetable-oil cooking spray
• 2 3/4 cups plus 1 tablespoon all-purpose flour
• 1 1/4 teaspoons baking soda
• 1 1/4 teaspoons salt
• 1 1/4 teaspoons ground cinnamon
• 1 teaspoon ground ginger
• 1/4 teaspoon ground cloves
• 2 1/2 sticks (20 tablespoons) unsalted butter, room temperature
• 1 1/4 cups packed light-brown sugar
• 1/2 cup plus 2 tablespoons granulated sugar
• 2 large eggs, plus 1 large egg yolk
• 1 1/4 teaspoons pure vanilla extract
• 1/3 cup unsulfured molasses
• 10 ounces white chocolate, coarsely chopped