Preheat the oven to 350°F. Grease a glass or metal 9x13-inch pan or line it with parchment paper for easy removal.
Whisk together all-purpose flour, baking soda, and salt in a medium bowl. Set aside.
2 ¼ cups all-purpose flour, 1 teaspoon baking soda, 1 teaspoon kosher salt
In a large mixing bowl, beat the butter, granulated sugar, and light brown sugar with an electric mixer until smooth. Add the eggs and vanilla extract, mixing until well incorporated.
1 cup unsalted butter, ¾ cup granulated sugar, ¾ cup packed brown sugar, 2 large eggs, 1 teaspoon vanilla extract
Slowly combine the flour mixture with the wet ingredients, mixing just until combined. Fold in 1 ½ cups chocolate chips, reserving ½ cup for the top.
2 cups 12-ounce package NESTLÉ® TOLL HOUSE® Semi-Sweet Chocolate Morsels
Spread the dough into the prepared baking pan and sprinkle the remaining chocolate chips on top.
Bake for 30-35 minutes, or until the top is golden brown and a toothpick inserted in the center comes out with a few moist crumbs. Cool completely before slicing into squares.