Ingredients

  • 10 tablespoons unsalted butter
  • 23 cup light brown sugar
  • 12 cup superfine sugar (white)
  • 2 teaspoons vanilla extract
  • 1 egg, refrigerator cold
  • 1 egg yolk, refrigerator cold
  • 2 cups all-purpose flour
  • 12 teaspoon baking soda
  • 1 (11 1/2 ounce) bag milk chocolate chips
  • 1 large cookie, sheet

Method

  • Preheat the oven to 325F Line a cookie sheet with parchment paper.
  • Melt the butter and let it cool a bit.
  • Put the brown and white sugars into bowl, pour the slightly cooled, melted butter over them and beat together.
  • Beat in the vanilla, the cold egg, and cold egg yolk, until the mixture is light and creamy.
  • Slowly mix in the flour and baking soda until just blended, then fold in the cookie chips.
  • Scoop the cookie dough in to a 1/4 cup round ice cream scoop and drop onto the prepared sheet, plopping the cookies down about 3 inches apart.
  • You will need to make these in 2-3 batches, keeping the bowl of cookie dough in the refrigerator between batches.
  • Bake 15-17 minutes in the preheated oven, or until the edges are slightly toasted.
  • Let cool on the cookie sheet for 5 minutes before transferring to wire racks to cool completely.
  • (can be made up to 3 days ahead and stored in airtight container will keep for 5 days).