Chocolate Chip Cookie Bars

INGREDIENTS

• 1 1/2 cups (3 sticks) unsalted butter, room temperature, plus more baking sheet
• 4 cups all-purpose flour
• 2 teaspoons baking soda
• 3/4 teaspoon salt
• 1 cup granulated sugar
• 1 1/2 cups packed light-brown sugar
• 2 large eggs
• 1 tablespoon pure vanilla extract
• 1 (12-ounce) bag semisweet chocolate chips