This recipe is in in Delia Smith's Christmas, and is great if you want to make mince pies but can't quite bring yourself to make pastry.
You melt butter in a big pan, turn off heat, then stir in brown sugar. Mix in wholemeal flour and porridge oats, then firmly press half the mixture into a buttered pan. I used a square Pyrex dish and buttered and lined it with a strip of baking paper to make lifting the slice out easier. Smooth over a layer of fruit mince, then press over the other half of the oat/butter mixture. Cook in a 200 C oven for 20 mins or until the top is lightly browned. Cut into 12 pieces but don't remove them from the dish until they are cool.
Ingredients: 150 g butter 75 g soft brown sugar 225 g wholewheat flour 110 g porridge oats 225 g mincemeat