Rinse and drain the chickpeas, keeping the brine to use later. Reserve a handful and set aside. Then add to a pan of boiling water and simmer for 15 minutes until softened.
Roast your garlic cloves and remaining chickpeas with a glug of oil in the oven for 15/20 minutes until golden. Check frequently to make sure they are not burning.
Transfer chickpeas to a blender along with your lemon juice, oil and roasted garlic cloves. Add in leftover chickpea brine gradually until a creamy consistency forms.
Transfer hummus to a bowl and drizzle with olive oil, and roasted chickpeas.