String beans baked with cheese sauce

1 . Stage

Boil the beans in salted water (I add about 1 tbsp of salt to 2 liters of water). If the beans are fresh, clean them, cut off the tails.

2 . Stage

Place in the form in which the dish will be baked.

3 . Stage

Let's prepare the sauce. Grate the cheese on a grater.

4 . Stage

Melt the butter in a small saucepan over medium heat. Add flour, mustard and mix well until homogeneous. Gradually pour the milk in small portions, stirring all the time.

5 . Stage

Add the cheese, mix well, salt and pepper it. The sauce is very fragrant, delicate and thick.

6 . Stage

Pour sauce over the green beans and bake at 220 degrees for about 20 minutes.