Preheat oven to 180°C (350°F).
Meanwhile, cut the sweet potato into smaller cubes.
Place the sweet potato on an oven tray lined with baking paper. Season with black pepper and salt.
Place in the oven and bake until tender and slightly browned.
Set aside and let cool completely.
Meanwhile, place the baby kale leafs in a bowl.
Add the avocado and sweet potato.
Drizzle with some balsamic vinegar.
Enjoy!