These bars are chocolatey, indulgent and super-easy to make with just 5 ingredients. Feel free to swap the chocolate hazelnut spread for regular chocolate spread or even speculoos spread (cookie butter).

Method

• Line a 20cm square baking tin with non-stick baking paper.

• Put the biscuits into a food processor and process until finely crushed. Alternatively, put them into a plastic bag and crush with a rolling pin. Set aside 20g of the crushed Oreos for the topping. Tip the rest into a medium mixing bowl, then pour in the melted butter and mix with a spoon until fully combined. Press the mixture firmly into the bottom of your prepared tin with the back of a spoon.

• Pour the melted chocolate hazelnut spread over the top, smoothing it out gently to the edges. Freeze for 20 minutes.
  
  FOR THE TOPPING: