01 -
Set your oven to 200°F (95°C) and line a baking sheet with parchment paper.
02 -
Take a spotless bowl and whip the egg whites on medium speed until they're nice and foamy.
03 -
Once the whites are foamy, toss in the cream of tartar and keep whisking until you see soft peaks forming.
04 -
Crank the mixer up to high and gently add the sugar, one spoonful at a time, as you go. Beat until the mix gets shiny and stiff peaks hold their shape.
05 -
Add the Jello powder and vanilla, then blend until everything looks smooth and the color is even.
06 -
Put the meringue into a piping bag that has a star tip. Pipe small dollops onto the parchment-covered baking sheet, leaving about an inch of space between each.
07 -
Bake them in the warmed oven for 60-90 minutes. They should feel dry and come off the parchment without sticking once done.
08 -
Turn the oven off but keep the cookies inside with the door cracked open for around an hour, so they cool gently.
09 -
After they've cooled completely, place them in a sealed container at room temp to keep them crunchy.