Ingredients

  • 1 lb unsalted butter
  • 28 ounces semi-sweet chocolate chips, divided
  • 6 ounces unsweetened chocolate
  • 6 extra large eggs
  • 3 tablespoons instant coffee granules
  • 2 tablespoons pure vanilla extract
  • 2 1/4 cups sugar
  • 1 1/4 cups all-purpose flour, divided
  • 1 tablespoon baking powder
  • 1 teaspoon salt
  • 3 cups chopped walnuts

Method

  • Preheat oven to 350°.
  • Butter and flour a 12x18x1-inch baking sheet.
  • Melt together the butter, 1 lb. of the chips, and the unsweetened chocolate in a medium bowl over simmering water.
  • Allow to cool slightly.
  • In a large bowl, stir (do not beat) together the eggs, coffee granules, vanilla, and sugar.
  • Stir the warm chocolate mixture into the egg mixture and allow to cool to room temperature.
  • In a medium bowl, sift together 1 cup of flour, the baking powder, and salt.
  • Add to the cooled chocolate mixture.
  • Toss the walnuts and 12 oz of chips in a medium bowl with 1/4 c flour, then add them to the chocolate batter.
  • Pour into the baking sheet.
  • Bake for 20 minutes, then rap the baking sheet against the oven shelf to force the air to escape from between the pan and dough.
  • Bake for about 15 minutes, until a toothpick comes out clean.
  • Do not over bake!
  • Allow to cool thoroughly, refrigerate, and cut into squares.
  • Ina's notes: Flouring the chips and walnuts keeps them from sinking to the bottom.
  • It is very important to allow the batter to cool well before adding the chips, or the chips will melt and ruin the brownies.
  • This recipe can be baked up to a week in advance, wrapped in plastic and refrigerated.