Name that Prune

This next recipe is definitely for the children (although Beloved would eat them if allowed). A good nibble to make for the Halloween Trick or Treat visitors, or for Bonfire night.
Hubble, Bubble Bars: makes 24
5 oz (150g) marshmallows
2 oz (50g) butter
5 oz (150g) rice crispies or similar cereal
3 oz (75g) hundreds and thousands
Snip the marshmallows into small pieces and put in a pan with the butter. Het getnly until melted., then stir in the rice crispies and hundreds and thousands. Mix well together.
Line a 7" x 11" (18 x 28cm) Swiss roll tin with foil, and grease lightly. Pour the marshmallow mixure into the tin and level the surface. Leave to get cold. Cut into bars when set.