- Step 1
Preheat oven to 170C or 150C fan-forced.
- Step 2
Place potato and cauliflower in an ovenproof dish. Mix together cream and mustard. Season. Pour over vegetables and toss to coat. Scatter over cheese. Cover with foil and bake for 1 hour.
- Step 3
Remove foil and cook for another 30 mins, until vegetables are tender and topping is golden.