Prepare a baking sheet with parchment paper and set aside.
In bowl add the egg whites and cream of tartar.
Whisk or use a mixer to make the egg whites frothy.
Once frothy, you will slowly add in the sugar while continuing to mix. Do this either with one teaspoon of sugar at a time or with a slow continuous pour.
Once all the sugar is mixed-in, add in the vanilla.
Blend at medium high speed for about 10 minutes until you have a marshmallow-like soft meringue that barely holds a peak.
Split this mixture in half, dying one half with red food dye.
Place the two colors into piping bags and cut the tips.
Place both piping bags in a third empty piping bag to create a blend of the two colors.
On the prepared parchment baking sheet, pipe out heart cookies and top with sprinkles.
Place in the oven for 1 hour.
Let cool after removing from the oven and you will have a firm, but soft to the bite meringue cookie!
Notes
Crack the eggs one at a time in a separate bowl to ensure that no egg yolk is accidentally added. Egg yolk will ruin the integrity of the meringue.
This meringue is different from typical meringue cookies, as it has a fluffy, soft, and chewy texture. This texture is achieved through the length of time when beating the egg white and sugar mixture.
Keyword cookies, gifts, hearts, holidays, meringue, Valentine's Day