...when worked in a resteraunt we used to "cook "our in the plate warmer on it's lowest setting for 24hrs.... my mother has also dried hers out on a rack above her Aga..... I have a couple of times set the oven to it's lowest setting and left the door ajar to dry them out....
Hi PinkFlower
Try going to the website below, I saw BBC chef Phil Vickery makes his meringue in the microwave! I wish you luck. I haven't tried it myself but was impressed by the result on tv