Place garbanzo beans, avocado, salt, pepper, olive oil, garlic, cumin, and lemon juice into the bowl of a food processor or blender. Blitz until smooth, adding in water (or more olive oil) until smooth and at the consistency you desire. Spoon into bowl.
For the topping, slice avocado and place onto hummus for garnish.
In a small bowl, stir garbanzo beans together with cilantro, lemon juice, corn and jalapeno. Pour over avocado and hummus. Serve with chips, vegetables or pita.