if using. Cover with the remaining potatoes, pour over the remaining cream mixture and scatter with the remaining cheese. You can chill the dish overnight at this stage (see recipe tip).
This recipe makes ... time for the cream to absorb into the potato skins and for everything to thicken up. If you have carrot, parsnip or beetroot peelings, use them in the gratin.
Slice the potatoes very thin on a mandolin, and place into a large mixing bowl. Combine the cream and maple syrup in a small saucepan, and scald over high heat; pour the mixture while still hot ...
But if I can find an easy way to lighten up an otherwise heavy dish like potatoes au gratin ... the infused cream and a few generous handfuls of shredded sharp cheddar cheese. I use white cheddar ...