Frank's Philadelphia is located at 2244 Fairview Road, Costa Mesa (949) 722-8725.
I ordered a #1 (small) Cheese Steak Sandwich, only onions added. The onions had a surprisingly sweet and caramelized flavor. The sandwich was *quite* delicious. It was even better the next day reheated in the oven--meaty, buttery, with a crispy-flavorful bread. Life is good!
This is serious "guy food". (The meal could benefit from a vegetable-type accompaniment, like coleslaw IMO.) But, I am highly adaptable and enjoy my lunch immensely!
P.S. Don't forget to stop at Let Them Eat Cake on Newport Blvd & Wilson for a delectably-sweet finish.