Try Dinkel's Bakery on Lincoln Avenue on the east side of the street just south of Roscoe. It's the old German neighborhood, though the ethnicity of the neighborhood seems to have changed to urban hipster now. Dinkel's looks the same as it did when I was a kid and everything is as good if not better than I remember. The chocolate chip cookies are fabulous but that adjective applies to everything in the store.
Check their website:

http://www.dinkels.com/