Flat mushrooms, also known as mature or large Portobello mushrooms, are prized for their robust, earthy flavour and meaty texture. With their wide, open caps and dark gills, they are perfect for grilling, stuffing, or using as a meat substitute in vegetarian dishes. Their bold flavour makes them ideal for hearty recipes such as burgers, sandwiches, and casseroles. Versatile and satisfying, flat mushrooms are a gourmet addition to any meal, offering depth and richness to every bite.