Satisfying Tomato Soup

Ingredients:
- 2 teaspoons oil
- 14 cup onion, finely chopped
- 14 cup celery, finely chopped
- 2 (14 ounce) cans diced tomatoes, undrained
- 1 12 cups chicken stock
- 2 teaspoons brown sugar
- 12 teaspoon salt
- 12 teaspoon basil
- 14 teaspoon oregano
- 14 teaspoon pepper

Directions:
- Warm oil in a saucepan over medium-high heat.
- Add onion and celery, stirring constantly, until tender, about 2-4 minutes.
- Stir in remaining ingredients.
- Bring to a boil, reduce heat and simmer uncovered, about 10 minutes.
- Puree soup using an immersion blender, or cool soup slightly and puree in batches in a blender.
- Return to pan and heat through.