Onions, Celery and garlic chopped/crushed and fried using Frylite.
Chop the sweet potato and the carrots and add to a pan of boiling water with a chicken or beef stock cube in it. Then add the fried onion, celery & garlic mix. I usually add a squirt of tomato puree and mixed herbs and season. Then add about half a bag of red lentils. Bring to the boil then turn down to simmer.
I make a large batch and then freeze it in portion sizes.