Speedy Petits Pois à la Française

• 1 (227-g/8-oz) packet frozen peas
• 50 g/

Boil the frozen peas in salted water and drain well. Melt the butter in a frying pan and cook the onion until soft and just beginning to brown. Add the lettuce leaves and stir until they are reduced and soft. Fork this mixture, butter and all, into the cooked peas and sprinkle with the mint and freshly ground black pepper. Add more salt if needed.