Step 1

In a large saucepan, heat the oil over medium high heat. Add the onions; reduce heat to medium and cook, stirring occasionally, for 8 to 10 minutes until deep golden brown.

Step 2

Place the onions and tomatoes in a high-speed blender or food processor and blend until smooth (entirely or mostly smooth, it is up to you).

Step 3

Pour the tomato mixture back into the saucepan used to cook the onions. Stir in the water and 1/4 teaspoon salt.

Step 4

Bring soup to a low boil over medium-high heat; reduce heat to low and simmer, uncovered, for 35 to 40 minutes until thickened slightly. Adjust salt to taste, as desired.