place egg whites and cream of tartar in a mixing bowl. You can use a stand or hand mixer.
combine the water and sweetener in a small sauce pan.
biol the sugar mixture to a temperature of 135 F - at this stage, start whipping the egg whites.
When the sugar mixture reaches 235 F pour slowly into the whipped egg whites - continue mixing while you pour in the sugar.
Keep beating until the egg whites are stiff and glossy.
Line 2 baking pans with parchment paper.
Spoon half the egg white mixture onto each baking pan.
Create a circle with an indented middle.
Bake at 250 F for 1 hour.
Turn off the oven and leave the pavlova in the oven overnight.
It will be dry on the outside and like marshmallow on the inside.
Fill with desired filling and enjoy.