Saute onion in olive oil on medium heat until translucent, about 5 minutes.
Add garlic, 1/2 teaspoon of the salt and stir until fragrant, about 30 seconds- 1 minute.
Add the crushed tomatoes, basil leaves or chiffonade along with a pinch of sugar. Cook on medium-low for about 15 minutes, stirring every couple of minutes.
Add the water and simmer, covered, for 15 minutes.
Add rice and cook for 15-20 minutes or until rice is soft to the bite.
Blend the mixture in a blender and mix until smooth a creamy. Rice should not be visible any longer and texture should be smooth. I did this in two parts.
Return the soup to the pot and season with up to 1 1/2 teaspoons of additional Kosher salt, your taste preference, and freshly ground black pepper.
Serve with garnishes of garlic croutons, basil chiffonade and/or shaved or grated parmesan cheese. Store any leftovers in the fridge for up to 3 days. This may also be frozen for later use.