Peanut butter cup bars

If you like Hershey's peanut butter cups, then these are for you. They aren't the healthiest of options, but as a treat they're very moreish. Great as a packed lunch surprise for no1 son, who's working long hours during the Olympics. - hope it will give him extra energy!
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120g unsalted butter
175g icing sugar

260g smooth peanut butter

12 digestive biscuits made into crumbs

60g unsalted butter

90g chocolate chips or chopped chocolate

You don't need an oven to make these. Line a 20cm square cake tin with foil, leaving some hanging over the sides and butter the foil.

Melt the 120g butter in a saucepan over a low heat. When melted, take off the heat and add the icing sugar. Stir till smooth. Add the peanut butter and the crumbs and again stir till smooth.

Spread this mixture into the cake tin and smooth the top.

Melt the 60g of butter in the same saucepan and add the chocolate.Stir till it's nearly melted, then take off the heat and stir till it has completely melted. Pour this over the layer in the tin and smooth.

When cool, put into a fridge for at least 30 mins to set.

Use the overhanging foil to take it out of the tin. A pizza cutter is useful for cutting into 16 bars.

Keep in an airtight box in the fridge.

I like the texture of these bars, firm and with a great peanut butter taste, then the chocolate kicks in.