These are especially rich and chewy.

Ingredients

　　2 ounces unsweetened chocolate

　　1/4 cup butter or margarine

　　1 cup sugar

　　1 egg

　　1/8 teaspoon salt

　　1/2 cup flour

　　1/2 cup chopped walnuts

　　1 teaspoon vanilla

　　Confectioners' sugar, for dusting (optional)

　　Preheat the oven to 300° F. Butter an 8-inch square pan. Line the bottom of the pan with wax paper, then butter and flour the paper. In a saucepan over low heat, melt the chocolate with the butter, stirring to blend. Remove from the heat and stir in the sugar, egg, salt, flour, walnuts, and vanilla. Spread in the prepared pan and bake for about 30 minutes. Cool for about 5 minutes, then turn out onto a rack and peel the wax paper from the bottom. Transfer to a cutting board and cut in squares. Dust brownies with confectioners' sugar if desired.

　　The Fannie Farmer Cookbook by Marion Cunningham