125gmarshmallowsstandard size marshmallows are easiest to melt but you can use mini marshmallows, they just need a lot of stirring to melt completely
125gbutter
125ggolden syrup
125gmilk chocolateoptional - use if you want a chocolate base otherwise omit for a plain base
200grice krispies
To cover
200gmilk chocolate
50gbutter
Instructions
Line the tin with non-stick baking paper.
Place the marshmallows, butter, syrup (and chocolate if using) in a large microwaveable bowl and heat on full power for 30 seconds. Stir well and return to the microwave for a few seconds if any lumps remain after stirring.
Alternatively you can place the ingredients in a large heatproof bowl and heat over a bowl of simmering water. Stir constantly until everything is melted and you have a smooth mixture.
Stir in the rice krispies until evenly mixed then press the mixture firmly into the tin. Smooth the top and allow to set if you don't want a chocolate covering.
If you are covering with chocolate, you don't need to wait until the mixture is completely set so long as you have pressed it firmly down.
Heat the chocolate and butter together until just melted - either in the microwave or over a pan of simmering water as before. Spread evenly over the base with a spatula or palette knife then lift the tray and shake vigorously to smooth out.