Soulfood restaurant in GTA?
The incarnation I used to go to was at King & Sherbourne. You'll not find a place that has the same vibe as Underground Railroad. Dining there always felt adventurous and decadent.
As others have said, Harlem is the closest you'll find to the cuisine. While not a perfect match, it's still a great meal and a good night out.
I didn't think of Harlem as serving soul food. Had the fried chicken, mac n cheese and greens when I was there. The fried chicken was like soul/Caribbean fusion, the mac n cheese is just mac n cheese and the collards weren't smoky or vinegary enough to suit my taste. I'd like to know if there are any other soul food restos besides Harlem.
Harlem is all I know - I keep meaning to hit them up again for their fried chicken. I didn't love their mac 'n' cheese as much, but their canidied yams were really good, as were their rice 'n' peas. More photos of menu etc below, but they're really not good photos the time I went. But at least you can get an idea.
And according to this thread, Harlem Underground is open:
Harlem at Richmond and Church is your best bet. Their fried chicken and mac & cheese are particularly amazing, though the rest of the menu is solid as well. They are also opening another location on Queen West called Harlem Underground but I haven't heard much, so I'm not sure if it's 100% open yet. http://harlemrestaurant.com/
There's also Southern Accent on Markham St. near Bloor and Bathurst. My wife and I have personally enjoyed it, but others give the place mixed reviews. It's more of a New Orleans vibe, the chicken liver apps are outstanding, as are their various mixed drinks and bourbons.
595 Markham St, Toronto, ON M6G2L7, CA
67 Richmond St E, Toronto, ON M5C1N9, CA
745 Queen St W, Toronto, ON M6J, CA