I've been tossing around the idea of doing a topical Bible study night/meal once a month with some neighbors who are interested (or at least tangentially so) along with some folks from Sunday school. A friend of mine who has been struggling with sin and faith suggested it. I feel a sense that your comment is being used to prod me a bit further.
One of the fears I've had (just tossing this out there for advice I probably already know but need to hear/read from someone else) is stepping on toes. I KNOW that if I just teach from the word it isn't a problem—or rather it isn't a problem unrelated to conviction, but going back to your earlier recommendation we all have difficulty with the idol of self-perception. I probably need to re-read 1 and 2 Timothy, because I've sometimes had issues with timidity in the face of those who are older and dealing with scripture.
An example: Explaining the nature of the word "elohim" as an ontological term (I'm a Southern Baptist) to a church elder who was convinced it's strictly another name for God was a good exercise but somewhat difficult, even with a Hebrew-English interlinear in hand to show him precisely how it is used in situ throughout the text. I managed, but my comparative youth against an elder and his obstinate refusal to see the word for what it was set me back somewhat in deciding whether to go forward with, shall we say, giving bread to the spiritually hungry.
I guess the only way to feed anyone is to start by making a meal. Thank you for the encouragement!