01 -
Preheat the oven to 110°C. Line a baking sheet with parchment paper to prevent sticking.
02 -
In a clean mixing bowl, whisk the egg whites at medium speed until foamy, approximately 2 minutes.
03 -
Incorporate cream of tartar and continue whisking until soft peaks develop.
04 -
Increase whisk speed to high and gradually add granulated sugar one tablespoon at a time, whisking until stiff, glossy peaks form. This process takes about 8 to 10 minutes.
05 -
Carefully fold in vanilla extract and green gel food coloring with a spatula until just combined, avoiding deflating the meringue.
06 -
Transfer the mixture into a piping bag fitted with a large star tip. Pipe tree-shaped spirals starting from a wide base and tapering to a point at the top.
07 -
Place the piped shapes in the oven and bake for 90 minutes without opening the door, until they are completely dry and crisp.
08 -
Turn off the oven, slightly open the door, and allow the meringues to cool completely inside for 30 minutes before removal.
09 -
Finish by decorating with assorted sprinkles as desired.