Heat a pan on medium high, add in 1 Tbs oil and the onions and carrots. Season and cook 2-3 minutes
Add in the oregano and tomato paste and mix together.
Stir in the fire roasted tomatoes and diced tomatoes. Add in the stock, bring to a simmer and cook 10-12 minutes. Using a stand or stick blender, puree the soup and blend in the parmesan. (if using a stand blender use caution because contents will be under pressure and can be dangerous if the blender is overfilled). Adjust seasoning and finish with the cream.