1 Heat the oil in a large saucepan. Saute the diced onions, and garlic until translucent.2 # Add the tomatoes, water, and spices. Bring to a boil, then reduce the heat to a simmer for 30 minutes.3 # Remove the bay leaves. Add the corn and beans and simmer for another 5 minutes.4 Garnish the soup with the toppings of your choice.