Welcome! We really need to know where you are in the USA, and your growing zone. If I offer Texas advice to someone in Wyoming, it won't be very useful!
We garden extensively with the same aim as yours--feed ourselves and give to the local food pantry. We have found that lettuces (leaf lettuces are easiest), cucumbers, bell peppers, summer squash (both green and yellow), and cherry tomatoes are very popular with the pantry clients. Fresh vegetables are a treat for them.
If you are going to donate to a food pantry, check with them to make sure they can accept vegetables from a non-commercial source, and also ask what the clients would most like.
Good luck with your garden, and feel free to ask any questions you may have.