Hold 2 sheets of matzah under water for 30 seconds. Shake off excess water.

Melt the butter in a frying pan on medium heat. Add onion and mushrooms and saute until golden.  

Break the matzah into pieces and add to the pan. Fry for a minute.

Scramble the eggs with the milk, salt and pepper. Add egg mixture to pan.

Mix everything in pan with spatula so all sides cook.  It’s done when the eggs are not runny anymore.