When it comes to food options there is really not much "personality" or "character" happening in the Yonge & Dundas area. Most restaurants at or within walking distance from Dundas Square / Eaton Centre are large chains - Joey's, Hard Rock Cafe, Milestone's, Johnny Rockets, Spring Rolls, The Pickle Barrel, Baton Rouge, etc. Next time you find yourself in the vicinity I highly encourage you to take a very short walk (three minutes from the Eaton Centre at most) to 249 Victoria Street because tucked away and hidden in the shadows of all those corporate giants you will find the Senator, the city's oldest restaurant (Twitter: @TheSenatorTO, Facebook: The Senator).
The restaurant is focused on using locally sourced ingredients as much as possible (i.e. beef from Cumbrae’s Farms and organic milk from Sheldon Creek Dairy). They also have a commitment to only use organic wherever possible. The Senator makes their own fresh-squeezed orange juice, stocks, sauces, and batters.
By the way it's funny how new restaurants these days strive for the retro / diner look while the Senator achieves this effortlessly. Love it!