Ingredients
1 pound unsalted butter
1 pound plus 12 ounces semisweet chocolate chips
6 ounces unsweetened chocolate
6 extra-large eggs
1 teaspoon instant espresso powder
2 tablespoons pure vanilla extract
2 1/4 cups sugar
1 1/4 cups all-purpose flour
1 tablespoon baking powder
1 teaspoon salt
3 cups chopped walnuts (optional)
Directions
Preheat oven to 350 degrees F.
Butter and flour a 12 x 18 x 1-inch baking sheet.
Melt together the butter, 1 pound of chocolate 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,espresso powder , 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 ounces of chocolate chips in a medium bowl with 1/4 cup of flour, then add them to the chocolate batter. Pour into the baking sheet.
Bake for 35 minutess, until a toothpick comes out clean. Do not overbake! Allow to cool thoroughly, refrigerate, and cut into 20 large squares.
1 pound unsalted butter
1 pound plus 12 ounces semisweet chocolate chips
6 ounces unsweetened chocolate
6 extra-large eggs
1 teaspoon instant espresso powder
2 tablespoons pure vanilla extract
2 1/4 cups sugar
1 1/4 cups all-purpose flour
1 tablespoon baking powder
1 teaspoon salt
3 cups chopped walnuts (optional)
Directions
Preheat oven to 350 degrees F.
Butter and flour a 12 x 18 x 1-inch baking sheet.
Melt together the butter, 1 pound of chocolate 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,espresso powder , 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 ounces of chocolate chips in a medium bowl with 1/4 cup of flour, then add them to the chocolate batter. Pour into the baking sheet.
Bake for 35 minutess, until a toothpick comes out clean. Do not overbake! Allow to cool thoroughly, refrigerate, and cut into 20 large squares.
