Gabe15

I wouldn't worry too much about cutting away any dead stuff, if there is living tissue in there it will grow through all that just fine and you might end up doing some damage. I'd pretty much echo Kat's advice and just water them, keep them in a warm and sunny place and see what comes back. I don't think you need any repotting until they start growing again. If you can take them outside and just totally soak the soil, and let it drain through a few times, that will re-wet the media and make it easier to water as needed, it won't hurt the plants if they are alive as long as they are in a warm and well-lit place. Bananas are very resilient plants I would bet you lost a lot less than you think.

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Growing bananas in Colorado, Washington, Hawaii since 2004. Commercial banana farmer, 200+ varieties.