We had lunch and dinner at Le Cellier last month and there were some differences we noticed.
The filet size is larger at dinner than lunch (5 oz vs 8 oz) although both were prepared perfectly. The mushroom risotto at dinner has larger pieces of mushroom and a greater variety of types of mushrooms.
The rib eye steak at dinner was one of the best steaks I had in DW. Great flavor.
There are some interesting appetizers on both menus, but my favorite the Duck Meatballs are only available at lunch.
The cheddar cheese soup and breadsticks are identical at both meals, although at dinner it does come with butter enhanced with sea salt.
The poutine is much closer to authentic at dinner, don't bother with it at lunch.
As far as atmosphere and service, Le Cellier is not equal to the experience we had at other Signature restaurants. Service was smooth and well paced, but lacked the attention to small details and the depth of knowledge that staff at other restaurants provided automatically.
Overall, the food was well prepared at both meals so it depends on what you would like to order. As far as I can tell, they will not serve lunch items at dinner or vice versa. For me, I guess I would sacrifice the duck meatballs for the rib eye and go for dinner.
