Ingredients
1 cup (2 sticks) unsalted butter, room temperature
1/2 teaspoon salt
1 teaspoon pure vanilla extract
3/4 cup dark-brown sugar
1/2 cup granulated sugar
1 large egg
1/2 teaspoon baking soda
2 cups sifted all-purpose flour
1 cup chocolate chunks or chopped bittersweet chocolate
Preparation
In the bowl of an electric mixer fitted with the paddle attachment, beat butter, salt, and vanilla until fluffy. Add both sugars; beat until lightened in color, 4 minutes. Beat in egg.
Add baking soda and flour; beat on low speed until just incorporated. Mix in chocolate. Transfer bowl to refrigerator; chill dough 1 hour or more.
Heat oven to 400 degrees. Line 3 baking sheets with parchment, and set aside.
Roll 1/4 cup dough into a ball, and place on a baking sheet. Repeat, placing a total of four balls on each sheet. Chill 20 minutes.
Transfer 2 baking sheets to oven, and bake 7 minutes. Rotate pans, and continue baking until just brown around edges, 6 to 8 minutes. Transfer baking sheets to wire racks; cool 2 minutes. Transfer cookies to racks, and cool completely.
Bake remaining cookies, and cool. Store all cookies in an airtight container up to 2 days.
