Name: Chocolate Chip Cookie Bars
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Yield: 16 bars
Ingredients: 1/2 cup unsalted butter, softened (1 stick); 3/4 cup firmly packed dark brown sugar; 1/4 cup sugar; 1 large egg; 2 teaspoons vanilla extract; 1 3/4 cups all-purpose flour; 1/2 teaspoon baking soda; 1/2 teaspoon salt; 1 1/4 cups semisweet chocolate chips, divided