Favorite casual breakfast spots (more cafe style?)

What are your favorite casual but delicious breakfast spots? I'm looking for something that's more walk up, order at the counter, snag a table and leave when you want, rather than a full sit down experience. Currently out of work on medical leave, but on the few good days I have, I enjoy getting out, grabbing a breakfast sandwich or something light, and just sitting and reading while enjoying my food and some fresh air. Also, surgery and chemo has made my stomach a little unpredictable, so I like counter service so I can just leave if I need to and not have to ask and wait for a bill. Bonus points if it has outdoor seating available.