Ingredients

  • 1 1/4 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup unsalted butter, at room temperature
  • 1/2 cup brown sugar, packed
  • 6 tablespoons granulated sugar
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1 cup semi-sweet chocolate chips
  • 3/4 cup white chocolate chips
  • 3/4 cup milk chocolate chips

Method

  • Position a rack in the middle of the oven and preheat to 350 degrees F.
  • Line 2 rimless baking sheets with parchment paper.
  • In a bowl, sift together the flour, baking soda and salt and set aside.
  • In a large bowl, combine the butter, brown sugar and granulated sugar.
  • Beat with a wooden spoon until smooth.
  • Add the egg and vanilla and beat until well blended.
  • Slowly add the dry ingredients and stir just until incorporated.
  • Stir in the chocolate chips.
  • Drop the dough by heaping tablespoons onto the prepared baking sheets, spacing the cookies 2" apart.
  • Bake the cookies, 1 sheet at a time, until the bottoms and edges are lightly browned and the tops feel firm when lightly touched, 10 to 13 minutes.
  • Let the cookies cool on the baking sheets for 5 minutes, then transfer them to wire racks to cool completely.
  • Store in an airtight container at room temperature for up to 3 days.