For those of us outside GB, what can we sun for the peanut butter pies?

Click on the link to sponsoring company (in recipe headnote) and you'll see several pictures of the product.
Looks like a mini tart with a peanut butter filling.
So you could use a combination of peanut-butter pie filling and some pastry.
Or make your own pb mini tarts and then use them to make the lava cakes.

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