Leeks and bacon au gratin

This recipe becomes easy if you have ready-made cheese sauce.

Cheese sauce

1. Melt the butter over a medium heat. Stir in flour and mustard. Cook for 1-2 minutes.
2. Gradually, pour in the milk, stirring frequently, and cook until the liquid starts boiling.
3. Remove from heat and mix in 3 Tbs grated cheese. Season to taste.

Leek and bacon bake

1. Cut leeks into 6-inch chunks and cook in salted boiling water until tender. Drain well.
2. Preheat oven to 350° F (180° C).
3. Wrap a piece of bacon around each leek and place into a greased ovenproof pan.
4. Pour sauce over leeks and bacon and sprinkle 1-2 Tbs grated cheese on top.
5. Bake for 25-30 minutes. Serve warm.