Never Fail Fudge - Chocolate or Peanut Butter

3 cups sugar
1.5 sticks butter (If you use unsalted, add a pinch of salt)
2/3 cup evaporated milk
1 pkg. (12 oz) semisweet choc. chips or 1 8 oz jar creamy peanut butter
2 7 oz. jars Kraft marshmallow creme
1 tsp vanilla extract
1 cup chopped walnuts (for chocolate)

Stir together first three ingredients in heavy saucepan. Bring to a boil stirring constantly. Continue boiling another 5 min. over medium heat, stirring quite a bit to prevent scorching. Remove from heat and gradually stir in the chocolate (or peanut butter), marshmallow, and vanilla. Add nuts if desired. Pour into a greased 13 x 9 pan. Cool at room temp. YUMMMMMMMMMMMMMMMM