My toddler goes to bed at 8pm. But that does not mean he goes to sleep. I would say he stays in his room for at least an hour to an hour and half before actually sleeping. He has a couple of toys he is allowed to play with, a nightlight that is on a timer. When nightlight turns of.. he stops playing and just chats to himself or sings to the soft music until he sleeps (I listen to him on the monitor.. hehe!). Here is what works for me. You can try this or switch it up as it fits your lifestyle.
If you get home @ 5:30, get settled for a few min, have your coffee break.
Take toddler for a long stroll around the neighborhood, show him stuff - trees, cars, rocks, birds etc, or let him be active for 1 hour, at the park or wherever he likes to play. And let him play HARD... run around, swing, slide..
Can your spouse take kid while you do cooking or visa versa? Swop every other night to give each other a break. Point is he/she needs to be tired to go to sleep, so an hour of hard play is good for both the kid and parent :-)
Nice warm bath (after dinner) PJ's, Favorite blankie, some winding down, maybe watching his fav DVD.. dont put a fun vid like toy story.. put a sloooow movie, maybe junglebook or elmo. Something to wind him down for 20 min. Or straight to bed, with soft music and a bed time story.
A kiss and hug and I love you... and remind him you are just outside the door and will come and "tuck him in" a little later. Leave. (you could put out a couple of toys he can play with quietly if he is that desperate, but tell him he needs to go Ni-Ni.
If you can afford a nightlight with a timer, get one. when the lights go out, say you set it for 15 min. He will get the message. He will cry for the first few nights, but when he gets used to the light turning off.. he will go to sleep. Look at Bed bath and beyond. They have one from Homedics.
Good luck.