Preheat your oven to 325 degrees
Line a large baking sheet with parchment paper or a silicone baking mat
Place 5 large egg whites in a large, clean bowl
Using an electric hand mixer or stand mixer, begin whipping the eggs whites on medium speed until they become frothy and bubbly
Gradually add the superfine sugar as you whip the eggs whites until all of the sugar has been fully incorporated and the egg whites have developed stiff, glossy peaks
Add a teaspoon of vanilla extract and whip for another 30 seconds
Add a teaspoon of cornstarch and 1/2 teaspoon of cream of tartar and use a silicone spatula to gently fold them into the egg white mixture
Transfer the mixture onto the prepared baking sheet and smooth into an 8” or 9” round with a small dip in the middle or transfer the mixture into a piping bag and pipe individual portions out in your desired shape (see additional directions above)
Transfer the pavlovas into a 325 degree oven, shut the door and immediately lower the ovens temperature to 220 degrees
Bake the large pavlova for 75-85 minutes or the individual pavlovas for 35-40 minutes or until the outer crust feels firm and dry
Turn the oven off, prop the oven door slightly open and let the pavlova cool for an hour in the oven
Decorate and serve the cooled pavlova immediately or cover it tightly and store at room temperature until the next day