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Winter Squash Soufflé

This elegant winter squash soufflé is a wonderful way to celebrate seasonal flavours. Combining a velvety squash purée with the nutty depth of Swiss cheese and a hint of warming nutmeg, it offers a sophisticated balance of sweetness and spice. The texture is beautifully light and airy, providing a comforting yet impressive centrepiece for any cold-weather menu. It is an ideal choice for those seeking a vegetarian dish that feels both indulgent and wholesome.

Perfect for a weekend lunch or as a refined side dish for a Sunday roast, this recipe is surprisingly straightforward to prepare. While many find the idea of a soufflé daunting, using a shallow baking dish ensures an even rise and a reliable set every time. Serve it immediately from the oven while it is at its most impressive, finished with a simple crack of black pepper and a crisp green salad on the side.

Continue reading below

Ingredients for Winter Squash Soufflé

  • 3 tablespoons unsalted butter plus additional for greasing

  • 3 tablespoons plain flour

  • 350ml whole milk

  • 1 (350g) package frozen winter squash purée, thawed

  • 120g coarsely grated Swiss cheese (110g )

  • 1 tablespoon packed brown sugar

  • 3/4 teaspoons salt, or to taste

  • 1/4 teaspoons cayenne

  • 3/4 teaspoons freshly grated nutmeg

  • 3 large egg yolks

  • 4 large egg whites

How to make Winter Squash Soufflé

Generously butter a 2-quart shallow ceramic or glass baking dish.

Put oven rack in middle position and preheat oven to 218°C.

Melt butter (45ml ) in a 2-quart heavy saucepan over moderate heat until foam subsides, then add flour and cook roux, whisking, 2 minutes. Add milk in a slow stream and boil, whisking, then reduce heat and simmer, whisking occasionally, until thickened, about 3 minutes. Whisk in squash, cheese, brown sugar, salt, cayenne, and nutmeg until combined (mixture may not be completely smooth), then transfer to a large bowl and whisk in yolks.

Beat whites with a pinch of salt in another bowl with an electric mixer until they just hold stiff peaks. Fold one fourth of whites into squash mixture to lighten, then fold in remaining whites gently but thoroughly. Spoon into baking dish and bake, uncovered, 15 minutes. Loosely cover top with foil and bake until puffed, golden brown, and just set, 25 to 30 minutes. Serve immediately, with freshly ground pepper.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 17 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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