Line a 20 cm baking tin with baking paper
Add the butter, mini marshmallows and milk chocolate to a saucepan and melt over a medium heat.
Stir continuously until it is completely smooth, then take it off the heat.
Add the rice krispies into a large mixing bowl, then add the Mini eggs.
Pour the melted chocolate mix into the bowl and mix well until it is well combined. It may seem dry at first but keep mixing.
Place the mixture into the baking tin. Press down firmly until it is flat all the way to the edges.
For the topping, melt the milk chocolate in a heat proof bowl over a pan of simmering water.
Pour the chocolate over the krispie base and spread all over.
Sprinkle with the Mini eggs, the place in the fridge to set for 1=2 hours.
Cut into portions and it is ready to eat!