To make the dough mix the flour salt and butter until it becomes bread crummy then add the milk, knead and then roll out dough.

Spread tomato pizza paste over dough, cover with remaining filling ingredients finishing off with the cheeses.

Roll it up, cut into slices roughly an inch or more if you like, layer in slow cooker on top of baking paper and cook for 1.5 - 2 hours on high with tea towel under lid.