Homemade Tomato Soup

I got very ambitious this weekend and made homemade tomato basil soup to take for lunch each day.  It was surprisingly easy, very healthy, and so yummy!! 
In a pot, you combine, 2 cups chicken broth, 2 lbs roma tomatoes cut into wedges, diced celery, diced onion, 1 tbsp tomato paste, and 1 tbsp basil.  Bring to a boil and then simmer for 30 min.  Put 1/2 the soup in blender and blend until you get desired textured.  Repeat with rest of soup.  Here's the key to making it absolutely divine- Just before eating, add a spoonful of plain Greek yogurt.  It gives it some creaminess, but still keeps it healthy. Soooooo good!!!!  I am thankful for the homemade tomato soup that I had each day for lunch last week!