Bring ⅓ cup (80 ml) water to a boil in a small pot. Add the couscous, cover, and remove from the heat. Let sit for 5 minutes, then uncover and fluff with a fork.
Mash the banana with a fork.
Layer the couscous, yogurt, banana, almond butter, berries, and grapes in two small glasses or jars until the glasses are filled to the top.