Can you use meringue powder in the place of the egg whites in SMBC?
You can, and someone posted a recipe here for it in a thread I believe, but I don't remember the ratio they used.
If it's an egg safety issue, I used the cartoned, pasteurized egg whites. I've found Kroger brand works best.
Also, you can use the powdered egg whites in the baking aisle.
Meringue powder has other ingredients in it that plain old pastuerized egg whites and powdered egg whites do not have, so I'd say they are a better solution.