Creamy Tomato Soup

Ingredients

• 3 tablespoons butter or olive oil
• 1 medium onion (finely chopped)
• 1/2 teaspoon red pepper flakes
• 1 1/2 teaspoons kosher salt
• 1/2 teaspoon black pepper
• 1 tablespoon oregano (dried)
• 1/2 teaspoon dried basil
• 3 cloves garlic (minced)
• 1 can whole tomatoes with juice (28 oz)
• 1 can fire-roasted diced tomatoes with juice (15 oz)
• 4 cups chicken broth
• 1/2 to 1 cup heavy cream
• 1/2 cup fresh basil (chopped)