These slices are a blend of the nutty sweetness of the crumble, and the citrus filling that seeps into the outer layers. Porridge is served daily in our house during the colder months but at this ...

Line an 8-inch square cake tin with parchment. Preheat your oven to 180ºC/gas mark 4. Sieve the flour and set aside. Cream the butter and sugar until light and fluffy. Add the flour and oats to ...