Drain and rinse your black beans. Chop the onion.
Add the beans, onion, sweetcorn and tomato to a pan with 1 tbsp water, the oil and garlic. Saute for around 5 minutes until the onion and tomato is soft.
Smear 1 tbsp of houmous on each wrap and microwave for 20 seconds to warm.
Add 2 tbsp of your bean mixture to each wrap, along with 2 slices of avocado.
Wrap up carefully and enjoy!