To the bowl of your mixer, add 1/3 cup water and sprinkle the gelatin over to bloom.
To the bloomed gelatin (basically just cool water soaked up by the gelatin) add the off the boil water to dissolve the gelatin. Stir until all dissolved.
Turn mixer on lowest setting and slowly add sweetener of choice. Add remaining ingredients.
Turn mixer up to high and beat until soft peaks form. The longer (stiffer) you beat, the more rustic your marshmallows will look. Not a bad thing. Just a little more difficult to spread into pan for us type-A people. Uh hem.
Pour into a greased 9×13″ pan and refrigerate until set, about an hour.
Flip out marshmallow cake onto cutting board and slice up to desired size.
Store in airtight container in fridge or freezer.
Toss in powdered sugar or arrowroot starch to keep from sticking if desired.
To roast, leave out on cookie racks for several days to create a dry “shell” about them. They toast over campfires BEAUTIFULLY!