Layers of thinly sliced pumpkin baked in sage-infused cream, topped with Gruyère for a golden, nutty crust. This comforting gratin makes a perfect side for roast dinners or holiday meals, offering warmth, texture, and seasonal flavour in every bite.
Preheat the oven to 190°C. Grease a medium baking dish with butter.
In a small saucepan, combine the cream, milk, chopped sage, and a pinch of salt and pepper. Warm gently over low heat for 5 minutes to infuse, then remove from the heat.
Arrange a layer of pumpkin slices in the prepared dish. Pour over a little of the cream mixture and sprinkle with a handful of Gruyère. Repeat the layers until all ingredients are used, finishing with cheese on top.
Dot the surface with butter and bake for 35–40 minutes until the pumpkin is tender and the top is golden brown. If the top colours too quickly, cover loosely with foil for the last 10 minutes.
Let the gratin rest for 5 minutes before serving — this allows the sauce to thicken slightly.