Slimming Down

I just finished writing an overly long chapter (took me weeks to finish it) but I know I need to either a) cut it in half (there are two scenes, so it would be easy to do that) or b) slim that chapter down. If I go with option a) I feel as if both of those chapters would be pretty incomplete. They're two scenes, not two chapters, and they just wouldn't work well as chapters.

But if I go with option b) I'd be cutting a lot of things out. Things that I really need to include. Or at least I feel like I should include them (but you know what they say about the author being too biased to always see clearly). Things that really develop the minor characters and strengthen their relationship with the MC.

So the problem here is that the chapter is too long.

Has it ever happened to any of you before? Any wise and must-follow advice that your brains cannot wait to share with me?