– 8 tomatoes chopped – 1 red bell pepper, sliced – 4 tbsp unsalted butter – 1/4 cup oil oil – 1/2 red onion chopped – 10 garlic cloves, smashed – 1 can tomato paste – 2 tbsp dried basil – 2 cups chicken broth – 2 tsp salt – 2 tsp black pepper – 1/2 tsp white pepper – 1 cup heavy cream – 2 tbsp brown sugar, optional