M&S Collection Portobello Mushroom & Mascarpone QuicheButter enriched shortcrust pastry filled with sauteed portobello and white mushrooms with smooth mascarpone cheese in a lavish egg custard filing. Ready to eat hot or cold. To serve warm, heat in the oven for 25 minutes. Serves 4. Welcome to Collection from M&S, where exceptional quality and intricate attention to detail makes for something truly special.M&S Food has been at the heart of the nation since 1884. Giving our customers their best-loved products at the incredible quality and value that only M&S can deliver. From Percy Pig to the freshest M&S Select Farms produce, we grow, source, and develop our own products to give you family-ready food that's unbeatable on flavour and innovation. And that's whether you come to us for your family favourites, an indulgent treat, or your perfect party food spread. After all, this is not just food… This is M&S Food. Expertly Produced, Made in Nottinghamshire, Suitable for vegetarians