Ingredients

  • 1/2 pound (2 sticks) unsalted butter, softened, more for baking sheets
  • 1 cup sugar
  • 1 egg
  • 3 cups all-purpose flour, more for work surface
  • Pinch salt
  • 1 teaspoon baking powder
  • 1 tablespoon milk, or as needed
  • 1 teaspoon vanilla extract
  • 2 cups chopped, good-quality semisweet or bittersweet chocolate (about 8 ounces)

Method

  • Use an electric mixer to cream together the butter and sugar; add egg and beat until well blended.
  • In a bowl, combine flour, salt and baking powder.
  • Add dry ingredients to butter and sugar, adding a little milk at a time as necessary to make dough just soft enough to handle.
  • Stir in the vanilla, then fold in the chocolate chunks.
  • Roll dough into a log about 1 1/2 to 2 inches in diameter, wrap well in plastic and freeze for at least 2 hours or up to several months.
  • When ready to bake, heat oven to 400 degrees and lightly grease a couple of cookie sheets.
  • Do not defrost dough.
  • With a thin-bladed or serrated knife, cut inch-thick slices from frozen log of dough, cut each into quarters, and put on prepared sheets, about 2 inches apart.
  • Bake until edges are lightly brown and the center set, 6 to 10 minutes.
  • Cool for about 2 minutes on sheets before using a spatula to transfer cookies to a rack to finish cooling.
  • Store cookies in a tightly covered container at room temperature for no more than a day or two.