Beat 1 cup dark brown sugar and 1 stick butter until fluffy, then beat in 3 egg, 4 ounces melted semisweet chocolate and 2 tablespoons buttermilk and 1 teaspoon vanilla. Whisk 1 1/2 cups flour, 1/2 cup Dutch-process cocoa powder, 3/4 teaspoon salt and 1/4 teaspoon baking powder; stir into the butter mixture. Add 1 cup oats,1/2 cup Grape-Nuts cereal and 2 cups chopped mixed nuts to the finished batter. Drop by tablespoonfuls and chill 30 minutes, then bake 8 to 12 minutes at 350 degrees.
Recipe courtesy Food Network Magazine