Three cup sugar Peanut Butter Fudge

¾  cup margarine
2/3  cup evaporated milk
1 cup peanut butter
1- 7oz jar marshmallow cream
1 tsp vanilla

 
Combine sugar, margarine, and milk. Bring to a rolling boil, stirring constantly. Boil 5 minutes over med heat. Remove from heat and stir in peanut butter until well blended. Add marshmallow cream and vanilla. Beat until well blended. Pour into greased 13 x 9 pan.