Wash the grapes thoroughly under cold running water and drain them well using a colander. Pat them dry with a paper towel.

Pour the Kool-Aid powder into a shallow dish or bowl. If you prefer a sweeter coating, mix the Kool-Aid powder with granulated sugar in the same dish.

Take each grape and roll it in the Kool-Aid powder mixture until evenly coated. You can do this individually or toss several grapes at a time for quicker preparation.

Place the coated grapes on a plate or tray lined with parchment paper to prevent sticking.

Refrigerate the Kool-Aid-coated grapes for at least 30 minutes to allow the flavors to set and the coating to adhere properly.

Serve the chilled Kool-Aid grapes as a fun, colorful snack or dessert!