Mushrooms are a type of funghi. There are many different varieties, including those that can be picked in the wild, as well as cultivated mushrooms that are generally sold as buttons, cups or flats according to age. Large flat (Portobello) mushrooms have more flavour than young buttons, and chestnut mushrooms tend to have a slightly stronger taste and firmer, meatier texture than ordinary white ones. Here is a low-carb treat, ready in 5 mins.

Ingredients

• 4 large field mushrooms
• 100g gorgonzola or other blue cheese, crumbled
• 25g walnuts, toasted and roughly chopped
• 4 thyme sprigs
• knob butter, cut into small pieces
• rocket leaves, to serve

Method

1. Heat oven to 200C/fan 180C/gas 6. Arrange the mushrooms on a baking tray. Scatter over the cheese, walnuts, thyme sprigs and butter. You can do up to this stage a day in advance.
2. Pop in the oven and cook for 10 mins until the cheese is melted and the mushrooms are softened. Arrange some rocket leaves on plates and place the mushrooms on top.