1 - Wash and chop the runner beans.

2 - Place in a saucepan with salted water and bring to a boil.

3 - Cook the beans for about 10 minutes or until al dente.

4 - Drain and set aside.

5 - Meanwhile, add the potatoes and cook until tender.

6 - Heat a small skillet with a little butter and sauté the onion until translucent.

7 - Add the garlic and cook briefly.

8 - Add the runner beans to the pan and stir-fry for a few minutes.

9 - Meanwhile, mash the potatoes with a masher.

10 - Add a knob of butter and a splash of milk.

11 - Add the bean mixture and grated cheese.

12 - Season with salt, pepper and mustard.

13 - Fry the bacon and serve with the bean mash.