In large saucepan over low heat (or wood stove) , melt together 1 can sweetened condensed milk, 4 Tbs. butter or margarine, and 1 tsp. vanilla.  Stir well till smooth. Add 2 cups miniature marshmallows and 2 cups Golden Graham cereal and spread on foil lined cookie sheet. When cooled completely, pull candy on foil out of cookie sheet and onto cutting board. Cut into squares with pizza cutter.  Store in sealed container or zip-loc bag.