Pre heat oven to 190°F celc.

bring a large saucepan of salted water to the boil.

Seperate the cauliflower into florets. Add to pan.

Simmer for 3 mins.

Drain cooked florets and place into casserole dish.

Heat butter in medium saucepan, add bacon and cook for 3 mins

Stir in flour and cook for 1 min.

Remove from heat and gradually add milk

Add 3/4 of cheese and stir until melted.

Add sage, salt and pepper. Sprinkle with cheese.

Bake in oven for 20 mins.