Instead of making individual small pies, I made one large one using a frozen pie shell, since I had a couple in the freezer. If this is the recipe that appeared in BBC Good Food, which I suspect it is, I would suggest adding a bit of extra plain flour to the crumble mixture. I made it as written and it had the consistency of soup, not crumble, hence the four star rating. I added a couple of tablespoons of flour to the mixture and it was fine afterwards. Overall, a lovely recipe!