Chewy Walnut Brownies Recipe

Preheat oven to 300 degrees F. Grease an 8-inch square pan. Put the margarine, carob, sugar, egg whites, salt, flour, and vanilla in a mixing bowl and stir briskly until blended. Add the walnuts and stir. Spread the dough evenly in the baking pan. Bake 30-35 minutes. Remove from the oven and let cool 10 minutes. Cut into 2-inch squares, remove from the pan and place on a rack to cool completly.