Gigi's Peanut Butter Fudge

This was my other favorite fudge that my grandmother made every year!

Ingredients:
½ cup butter/ marg.
5 cups sugar
1 (12 oz) can evaporated milk
1 (18 oz) jar creamy peanut butter
1 (7 oz) jar marshmallow cream

Directions: Butter sides and bottom of a large Dutch oven, leaving excess butter n pan. Add sugar and evaporated milk, stirring well. Bring mixture to a boil over medium heat, stirring occasionally. Cook, stirring constantly, until mixture reaches soft ball stage or a candy thermometer registers 234. Remove from heat; add peanut butter and marshmallow cream, beating with a wooden spoon until blended. Pour into a buttered 13x9x2 inch baking pan or dish; cool before cutting.