My 18 month old son refuses his dinner every day!?

my 18 month old will not eat his dinner and i dont no what to do!! he eats his breakfast of porridge and fresh fruit every morning no problem and he enjoys snacks of things like dried fruit, fresh fruit, biscuits, crackers, crisps (chedders) toast and he loves yoghurts but he wont eat veg! he has eaten almost ever kind and enjoyed them in the baby jars, but seems to hate home cooking! i cant afford to give him the baby jars all the time, and at 18 months i would like him to be eating the same as me and getting alot more veg in his diet, but even when i mash it all up for him he turns his nose up at it! i cant win! the only thing he will eat that i cook is waffles or chips!!! i dont no how to make him eat a real dinner! we live a healthy life style and i have introduced real dinners and veg early so i dont no why he refuses to take to it! any ideas?