In saucepan over low heat melt semi-sweet chocolate, 2/3 cup sweetened, condensed milk, 1 Tbls. milk and 1 tsp of vanilla. When melted and smooth, remove from heat and stir in 1/2 cup of nuts (optional).Spread in 9 x 9 foil lined pan (8x8 works too). Chill while melting the next ingredients. In saucepan melt milk chocolate chips, remaining sweetened condensed milk, 1 Tbls. milk and 1 tsp vanilla until smooth. Remove from heat and add remaining nuts (optional). Spread over fudge in pan. Chill 2 hours until firm. Turn fudge onto cutting board. Peal off foil and cut into squares. Store loosely at room temperature. (This melts pretty easily, so if it is hot you might want to refrigerate it until serving...) File ftp://ftp.idiscover.co.uk/pub/food/mealmaster/recipes/mmkah001.zip