Finely chop the onion and garlic.
Blend the corn in a blender until smooth.
Heat olive oil in a pot and sauté the onion and garlic.
Add the blended corn and sauté, then pour in milk and water.
Simmer over low heat and season with salt and pepper.
Cut the bread into small cubes and air-fry until crispy.
Pour the soup into a bowl and top with croutons to finish.