Chocolate Chip Cookie Bars

Bahan-bahan (20 porsi)

• 1 cup butter* (softened)
• 1 cup granulated sugar
• 1/2 cup brown sugar (packed)
• 2 large eggs
• 2 teaspoons vanilla
• 1 teaspoon baking soda
• 2 teaspoons warm water
• 2 and 1/4 cups all purpose flour (spooned and leveled)
• 1 tablespoon cornstarch
• 1 teaspoon kosher salt
• 1 and 3/4 cups semisweet chocolate chips
• 1/2 cup semisweet chocolate chips (to press on top)