This is really quick and easy to make. You can leave out the chilli flakes if you prefer your soup to be less spicy.
Onion -1, chopped
Chopped tomatoes - 400 g tin
Red lentils - 3 tbsp
Garam masala - 2 tsp
Chilli flakes - pinch
Vegetable stock - 500 ml
1) Place all the ingredients in a large saucepan. Bring to a simmer and cook for 20 minutes until the lentils are soft, stirring occasionally.
2) Blend roughly for a few seconds and serve. Serves 2-3.