Creamy Fudge (Luana's)

1 (12 oz) pkg. semi-sweet chocolate chips
2 (8 oz) Hershey's bars
2 cubes butter
4 C sugar
1 can evaporated milk
2 1/2 C mini marshmallows
1 C. nuts (opt.)
2 Tbs. vanilla
2 1/2 C frozen marshmallows

Break up chocolate and butter. Put in bowl with chocolate chips. Put milk, sugar and 2 1/2 cups marshmallows together in a big pan. Stir and boil 7 min. Remove from heat; pour over chocolate and butter. Stir until it loses shine. Add frozen marshmallows, nuts (if desired) and vanilla. Put in individual buttered dishes or a 9x13 or 15x10 inch pan.