D.P.
Call places and ask what they do with their food.
For example, Panera and Whole Foods bakeries have to pitch ALL bread and bakery items every night. You'll need to pick it up at closing for delivery that night or the next day, depending on when the shelter(s) can receive it.
Be advised, many grocery stores have policies specifically prohibiting them from donating food and or produce to ANYONE.
A food bank is not going to take prepared foods--only packaged stuff.
Shelters generally will take prepared food.