Swede Gnocchi with Crispy Sage
400g floury potatoes, such as sebago or dutch cream600g swede, peeled4 tbsp olive oil1 tsp chilli flakes100g flour, plus extra for dusting30g parmesan (or vegetarian alternative), grated, plus extra to serve100g buttersmall pack sage leaves pickedHeat oven to 220C/200C fan/gas...