Preheat the oven to 325°F (165°C) and prepare your baking sheets by either greasing them or lining them with parchment paper.
Mix the dry ingredients: In a medium bowl, sift together the flour, baking soda, and salt. Set this aside for later.
2 cups all-purpose flour, ½ teaspoon baking soda, ½ teaspoon salt
Cream the sugars and butter: In a large bowl, use an electric mixer to combine the brown sugar, melted butter, and white sugar until the mixture is smooth and creamy.
1 cup packed light brown sugar, ½ cup white sugar, ¾ cup unsalted butter
Add wet ingredients: Beat in the egg, egg yolk, and vanilla extract until the mixture becomes light and fluffy.
1 egg, 1 egg yolk, 1 tablespoon vanilla extract
Incorporate the dry ingredients: Gradually add the flour mixture into the wet ingredients, mixing until just combined. Be careful not to overmix. Stir in the chocolate chips.
1 ½ cups semisweet chocolate chips
Shape the cookies: Drop spoonfuls of dough onto the prepared baking sheets, leaving about 3 inches of space between each cookie.
Bake: Place the cookies in the oven and bake for 15-17 minutes or until the edges are golden brown.
Cool: Allow the cookies to cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely. Enjoy!
