In a saucepan, add the soup and milk. Whisk together until smooth. Warm over medium heat 7 to 10 minutes, stirring frequently. Add in the chopped tomato and herbs. Cook an additional 5 minutes, stirring occasionally.
Ladle even amounts into individual bowls and garnish each serving with 1 tablespoon croutons and 1 1/2 teaspoons Parmesan. Serve immediately.