All you need to do is melt 300g white chocolate and spread in a lined rectangular baking tray. Let it harden in the fridge while you melt 300g milk chocolate and then spread this on top of the white layer. Lightly crush around 100/150g of mini eggs (I had bought one of the large bags and used half of it) and sprinkle over the top of the milk chocolate while warm. Then just let it all set and slice it into squares.
I use supermarket own brand basic/value/savers chocolate that costs 30p for a 100g bar to make this, so this treat is not only delicious but super savvy cost wise too. A whole tray will cost only around £2.80 and would make a lovely Easter gift if packaged up nicely. Much cheaper than an Easter Egg and you get more chocolate in it too! Win, win.
Now, if only I could think of a chocolate bark idea for summer and autumn then we would have one for every season of the year. Although perhaps that might not be such a good idea!