Wet each matzah under running water, both sides, and wrap loosely in a towel.

Wait 5 minutes for the matzot to be soft enough to roll. (Re-wet and place in towel again if needed.)

Beat egg and pour beaten egg into a plate.

Soak matzot well in beaten egg, both sides.

Lay cheese on two-thirds of each matzah.

Roll the matzah like sushi with the cheese-covered part in the middle, leaving the edge without cheese on the outside (so that the roll will stay shut).

(Optional) Powder the rolls with matzah flour for a crispy exterior.

Heat the butter or oil in a frying pan.

Fry the matzah rolls on all sides for 5 minutes or until lightly browned on all sides.

Serve hot.