Preheat the grill. Meanwhile, pour the oil into a frying pan and place on the hob over a medium heat.
Finely slice the spring onions, then chop the mint and slice the brie.
Stir the peas, mint and spring onions into the eggs with a little salt and pepper and pour into the hot pan. Cook for 3-4 minutes, moving the egg around a bit to ensure it is almost cooked.
Top the mixture with the sliced brie and then put the pan under the grill for 4 minutes, until the cheese is melting and the edges are golden. Serve with crusty bread, if you like.