Loaded with almost any kind of vegetable, herb or cheese according to the season or taste, frittatas are not only a delicious solution for empty stomachs, they're fast and easy to make too. Blue Stilton cheese gives this frittata a sharp, pungent tang that blends gracefully with the milder flavours of potato, onion and egg … but be careful not to load much extra Stilton on, it can be quite overpowering!