Lentil soup

I got this recipe is from my co-worker Kathy several years back. Her Italian mother made this frequently when she was growing up. The ingredients are so simple, but it tastes so good. I know lentils aren't everyones "cup of tea", but I love them. Warning, this makes a lot of soup!

Ingredients
Olive oil
1 onion, chopped
2-3 carrots, chopped
4-5 stalks celery, chopped
2 garlic cloves, minced
1 14 oz can diced tomatoes
1 bag lentils
11 cups stock/broth of choice (maybe a little less if not adding rice or pasta)
1/2-1 cup small pasta or brown rice(tonight I used ditalini which is the cutest little pasta ever!)
Parmesan cheese

Heat oil in large soup pot. Saute onion, carrots, and celery until tender. Add garlic and salt/pepper to taste. Cook 1-2 more minutes. Add tomatoes, lentils and stock/broth. Stir and bring to a boil. Cover and simmer for 30 minutes. Add small pasta or rice. Cook until done. Rice will take much longer than pasta to cook.

To serve ladle into bowls, add a little olive oil and parmesan cheese. Yum!