Method:
1 Season steak with salt and pepper and rub with a little olive oil.  Heat a frying pan over medium-high heat, add steak and cook for 4-5 minutes each side for medium or until cooked to your liking.
2 Heat butter and oil in a frying pan over medium-high heat add leeks and cook for 4-5 minutes tossing occasionally, until leeks caramelize.
3 Place lentils in a saucepan with the vegetable stock and simmer for 15 minutes or until lentils are cooked. Drain well.
4 Heat oil in a frying pan over medium heat, add onion, garlic, capsicum and ginger and cook for 4-5 minutes or until onion softens a little.  Add lentils to the frying pan and stir to combine. 
5 Spoon lentils into a bowl, top with porterhouse steak, serve.