Vegetarian Lentil Soup

Another cold day, another bowl of soup.  Today, I went with Lentil soup.  I based this recipe off Giada's Beef and Lentil Soup, but made it vegetarian. 

Ingredients:
1 diced onion
2 cloves garlic, diced
1 tsp rosemary
1/2 tsp oregano
1c lentils
1 can diced tomatoes
1qt vegetable stock
spinach

Saute the onion and garlic in olive oil until soft.  Add rosemary, oregano, lentils, tomatoes (and their juice), and stock.  Bring to a boil and simmer for 40 minutes.  The directions on the lentils advise to simmer for 20 minutes, but I don't think they are very tender.  The longer you simmer them the more tender they will be.  Once the lentils are tender, add spinach.  I think fresh is the best (2 handfuls or so), but I didn't have any today and added about 3/4c frozen chopped spinach.  Add salt and pepper to taste and enjoy!  The little 1 year old that I babysit for ate this like it was her last meal.  I was going to try to take video of her shoveling it in, but she was eating it too fast!!!!!