step 1
Heat olive oil in frying pan and gently fry chopped onion until softened, add garlic, salt, pepper and oregano for 2-3 mins being careful not to let the garlic burn.
step 2
Add the chopped tomatoes to the pan and simmer very gently for 20 mins to thicken the sauce.
step 3
Add the drained lentils and simmer for a further 5 mins until thoroughly heated through.
step 4
Meanwhile boil a large saucepan of water add salt and cook the spaghetti according to the pack instructions.
step 5
Drain the spaghetti, arrange on a plate piling a quantity of the sauce on top. Serve parmesan separately to sprinkle on top.