Place the onion, garlic, ginger, and chilli pepper in a food processor and process until smooth.
Heat oil in a saucepan and add the blended paste. Cook for 2 minutes, then add all the spices and bay leaves. Cook for additional 3 minutes.
Cut the mangos in half, removed the stone and scoop out the flesh. Place it in the blender and blend until it's smooth. Add the mango purée to the saucepan with the garlic paste. Stir to combine. Cook for 5 minutes.
Now add coconut milk, maple or rice malt syrup, and rice vinegar. Stir and cook for 10 minutes over medium heat. Stir occassionally.
As the last, add chickpeas. Lower the heat and cook for 5 minutes. Taste and add salt and pepper according to your preferred taste. Remove the bay leaves.
Divide the curry between two to three plates. Garnish with fresh coriander leaves. Serve with cooked rice, papadams or naans (gluten-free if you wish).