To the pitcher of your blender, add both types of cherries, lime juice, lime juice, lime zest, sweetener, water and crushed ice. This may need to be done in two batches depending on how large your blender is.

Blend on high for at least a minute, or until the mixture is smooth.

Add more or less ice and/or water depending on the consistency you wish to have with your slushie.

Garnish with rainier cherries and enjoy!