Boil the oat milk and olive oil on medium heat. Remove from heat immediately. Set aside.
Combine tapioca, salt, and garlic powder in a mixing bowl. Slowly pour the warm oat milk and olive oil mixture into the dry ingredients. You may taste the dough to adjust the seasonings.
Mix until a smooth but firm dough forms. Add the Just Egg and grated vegan cheese, then mix well until the cheese blends with the dough.
You should be able to form a ball of dough when mixed well.
Not all tapioca flour brands are the same. Add more flour if it's too wet; likewise, add more liquid if it's too dry.
Coat your hands with some oil to prevent the cheese ball dough from sticking to your hands.
Roll the dough between your palms into small, bite-sized balls, then place them on the prepared oven tray with parchment paper or silicon mat.
Rest the dough for at least 20 minutes before baking. Freeze if you don’t need them yet.
Bake for 15-18 minutes in a preheated 190°C (375°F) oven or until the cheeseballs puffs and lightly golden. Serve warm.