1/4 c. butter
4 c. miniature marshmallows (or 48 lg. ones)
1 tsp. vanilla
5 c. Rice Krispies

Melt butter in a 3 quart saucepan; low heat. Add marshmallows and stir constantly until melted. Add vanilla. Remove from heat and stir in Rice Krispies. Mix well. Spoon onto greased cookie sheet or ungreased tin foil. (I pour into a buttered 9 x 13 inch cake pan.)