1 teaspoon minced fresh thyme or 1/2 teaspoon dried thyme
1 bay leaf
1/4 teaspoon pepper
In a large saucepan, cook onion in butter until tender. Stir in flour to form a smooth paste. Gradually add water, stirring constantly until thickened. Add the tomatoes, parsley, salt, sugar, thyme, bay leaf and pepper; bring to a boil.
Reduce heat; cover and simmer for 20-30 minutes or until tomatoes are tender. Discard bay leaf.