Lentils and Potatoes Soup

For rainy days, a light and delicious meatless soup. I can never get enough of this healthy soup.

Ingredients:
1 big onion
3 carrots
4 medium size potatoes
3 sticks celery
2 cups green lentils
1 8 oz can of tomato sauce

Saute onions with celery and finely dices carrots (I usually grate the carrots).

Add the the lentils and saute them for a 4-5 minutes.

Add 7-8 cups of water and the tomato sauce. Towards the end, add the potatoes cut into small cubes.