Preheat the oven to 200C/180C Fan/Gas 6. Put the portobello mushrooms on a baking tray. Divide the unsalted butter between each mushroom. Season with salt and pepper and put a sprig of fresh thyme ...
These portabella peach sandwiches are perfect for summertime ... Mix all of the marinade ingredients together in a small bowl. Place the mushrooms in a flat baking dish and pour the marinade over them ...