Read the reviews for this place and thought I'd give it a try. My love affair with the hot veal sangwich started in the 70's with San Francesco's and then California Sandwichs as well. I'm a regular at both.
When I found out that On A Bun is only a couple blocks from my place I was more than eager to give it a try and I ordered the hot veal.
Verdict... less meat than the Cali veal but very tasty none the less. The good news is you don't have to wait 20 minutes in line like you do at Cali on Chesswood or on Queensway.
As for San Fran well I've been eating their sandwiches since they were 75 cents each on Clinton and they're still as good as ever at the Mississauga location.
I definitely wasn't disappointed with On A Bun, the sandwich was very tasty, good quality veal and it did satisfy my craving and based on the fact that it's near me I will definitely go back. The staff is very friendly also so give it a try you won't be disappointed.