For 4 people you need
2 good sized onions
4 large potatoes
For the sauce
1 oz. margarine
1 oz. flour
1/2 pint milk seasoning.
2-3 oz. grated Cheddar cheese
- Peel both the onions and potatoes.
- Slice onions thinly, and potatoes thickly, and cook in boiling salted water until just tender, then strain.
- Meanwhile make the sauce: Heat the margarine in a pan, stir in the flour and cook for several minutes, then gradually stir in the milk, bring to the boil and cook stirring well until thickened and smooth, season.
- Arrange vegetables in a dish with the sauce, top with grated cheese and cook under grill until crisp and brown.