Clean and prep the tomatoes, onion, and garlic.
Heat olive oil in a pan and sauté the onion and garlic.
Add the prepared tomatoes and sauté together.
Pour water over the vegetables and bring to a boil.
Season with salt and pepper to taste.
Blend the soup until smooth in a blender.
Pour back into the pot and bring to a boil again.
Serve in a bowl and garnish with parsley or cream.