Potato And Cauliflower Gratin

1. 1

   Cook the potatoes in salted, boiling water for 20-25 mins, until tender then drain. Meanwhile, cook the cauliflower in a separate pan of boiling, salted water for 6-8 mins until tender then drain. And reserve the cooking liquid.

2. 2

   Run the potatoes under cold water until cool enough to handle then peel and slice in half, if large.

3. 3

   Melt the butter in a saucepan, add the onion and saute for 4-5 mins over a low-medium heat until soft. Sift in the flour and saute for 1-2 mins. Gradually stir in the milk and gently heat until the sauce thickens. Mix in the mustard, sugar, nutmeg and half the cheese.

4. 4

   Grease a baking dish then arrange the cauliflower and potatoes inside. Pour over the sauce then sprinkle with the remaining cheese. Bake for 25-30 mins then add the tortilla chips to the dish. Serve.

* Per serving · 4 servings · Values may vary.