Soak your lentils for a few hours prior to cooking.
Prepare your vegetables by dicing the larger ones such as onion and carrot. Cut the cauliflower and broccoli into small chunks.
Add some olive oil to a pan and fry all your vegetable until soft. Add in the curry or korma powder in and mix well.
Drain the lentils and add to the vegetables. Add in about 1/3 of the stock and let simmer for about 10-15 minutes, stirring occasionally.
Next add in the can of chopped tomatoes and mix well. Season and taste. You can add some Masala powder in for extra curry flavour. Let the mixture simmer and gradually add more stock to keep it from sticking to the pan. Cook for a further 20-30 minutes.
Source of recipe: Made this up from cupboard contents