Heat your oven to Gas Mark 4, 180 C.
1 medium onion, which I spiralised on the flat blade of the spiraliser
1 clove garlic, chopped
4 potatoes, spiralised into noodles
The end of a 200 ml pot of creme fraiche, filled up and then refilled with milk (so c 400 ml milk/cream mixture in total)
Salt and pepper, to taste
The end of a packet of grated Emmenthal - probably about a tablespoonful.
Fry the onion and garlic for a few minutes in vegetable oil in a casserole dish that will go on both the top of the stove and in the oven. Add the potato noodles and stir well. Season, and stir again. Now add the milk/cream mixture, and top with the Emmenthal.
Bake for about an hour, until the potatoes are cooked.