Nigella Lawson's Peanut Butter squares

These delicious chocolate and peanut treats were made as a bribe for James to do some revision the other evening. Did it work? No, he ate and enjoyed them but still didn't do the revision required. We haven't got long to go, it will all be over by Friday and there starts a very long summer. We will then have the job of finding a prom suit for the following Friday, hopefully it won't be as difficult as the prom dress search last year. Anyway, if you like Reece's Peanut butter cups you will love these, they are very similar. The recipe is an old favourite from, 'How to be a Domestic Goddess'.

INGREDIENTS
Serves: 12

For the base
50g muscovado sugar
200g icing sugar
50g unsalted butter
200g smooth peanut butter

For the topping
200g milk chocolate
100g plain chocolate
1 tablespoon unsalted butter

Method
Stir all the ingredients for the base together. You can simply use a wooden spoon and bowl or throw it all into the magimix for a couple of high powered seconds.
Press the sandy mixture into the lined brownie or similar style tin and make the surface as even as possible.
To make the topping simply put the chocolate and butter in a glass bowl and microwave for only a minute or two to melt.
Spread on base and put the tin in the fridge to set.
When the chocolate has hardened cut into mini squares.