ingredients
400gr cauliflower flourets
400gr broccoli flourets
50gr unsalted butter
45gr plain flour
1 bay leaf
1 tablespoon Dijon mustard
1/2 teaspoon gratin nutmeg
200gr Lancashire , cheese , crumbled
50gr grated parmesan
a handful of sage leaves
1 teaspoon olive oil
method
Cook the cauliflour in boiling salted water foor 8-10 minutes until just tender , adding the broccoli halfway through, drain and set aside .
to make the sauce , melt the butter in a nonstick saucepan over a medium heat adding the flour and cookor 1 minute until floury in appearance remove from the heat and gradually work in the milk using a wooden spoon , a little at a time , add the bay leaf , return to the heat and bring to the boil stairing frequently , until the sauce vthickens ; remove the bay leaf , add the mustard and whisk until the sauce is completely smooth , season to taste with salt , freshly ground black pepper and the nutmeg . Warm the gratin dish underneath a grill ; gently stir the vegetables into the sauce and reheat ; mix in the the crumbled Lancashire cheese and tip into the dish .
Scatter over the parmeasan and grill until golden , toss the sage leaves in the olive oil to coat them and scatter over the gratin , again , grill again briefly until staring to crisp and color , serve straightaway .
