c("Preheat oven to 350 degrees Fahrenheit.", "Heat butter and unsweetened chocolate over low heat, stirring  constantly, until melted; cool slightly.", "Beat in sugar, vanilla and eggs in a 3 quart bowl on high speed 5 minutes.", "Beat in chocolate mixture on low speed.", "Add flour; beat just until blended.", "Stir in nuts.", "Spread in greased 9x9x2\" square pan.", "Bake just until brownies begin to pull away from sides of pan, 40 to 45 minutes.", "Cool.", "Cut into about 2\" squares.")