I'm never a doughnut fan.
I don't think dough should be dipped in oil and fried.
But when I saw TGBBO program and the beautiful jam doughnut, I was converted. I used Paul Hollywood's jam doughnut recipe. I must say this is the best doughnut I've tasted and would definitely make em again. The doughnut was soft and supple unlike to the store bought ones which are rock hard and ridiculously sweet.
I simply dust most of the buns lightly in caster sugar and filled the rest with jam and a couple dipped in melted chocolate with toasted almonds.
The only adjustment I made was to reduce the size of the dough. I suggest you divide the dough into 20 small balls instead of 10 as he did...err that would make a huge doughnut size of a football! If you find 20 too much just do a half batch as doughnuts really have to be super fresh to be enjoyed at their best.
I hope you would give this doughnut a go.