Put the broccoli in a covered container and put in the microwave for 2-3 min. at max power, stirring one. Drain out the resulting sauce.
Beat the eggs and mix them with the finely chopped onions, milk, crumbled feta cheese and black pepper. Pour this over the broccoli.
Cover the container and cook 4-5 min. at 70% microwave power, stirring 2-3 times throughout. Leave to sit for 3-5 min., then serve.