Herbed Tomato Soup

Ingredients (13)

• 1/2 cup (1 stick) butter,
• 2 tablespoons extra virgin olive oil
• 1 large onion,
• 4 sprigs fresh thyme
• 4 large basil leaves,
• salt and freshly ground black pepper,
• 2 1/2 pounds fresh tomatoes,
• 3 tablespoons tomato paste
• 1/3 cup all purpose flour
• 4 cups chicken or vegetable broth
• 1 teaspoon granulated white sugar
• 1 cup heavy whipping cream
• croutons,