Cut onion into small dice.

Cut avocado in half lengthways. Use a teaspoon to hollow out the center of 1/2 of the avocado slightly, to give more room for the filling. Sprinkle some salt and black pepper over the scooped half. Sprinke some lime juice on the unused half to save it if not using.

Drain tuna and add to a mixing bowl, along with the avocado you scoopped out of the half, cream cheese, yogurt, onion, Peri-Peri sauce, lime juice, and salt and pepper to taste. Mix well.

Pile tuna mixture into the scooped avocado half. Drizzle with more Peri-Peri to taste and enjoy!