3 (1-ounce) squares unsweetened chocolate 3 tablespoons butter 1/3 cup unseasoned mashed potatoes (if using leftover seasoned potatoes, omit salt) 1/8 teaspoon salt 2 teaspoons vanilla extract 1 (16-ounce) package powdered sugar, sifted 1/2 cup chopped nuts, toasted (optional) Line Read More …