Cyn, I'm on my third batch of Kentucky pole beans cooked in the small crock pot. It's a Thai
based recipe: coconut milk, tomatoes, Thai chili sauce, ginger. I really, really like it and the neighbors are grateful to have someone else eating the surplus. Green beans seem to be the zucchini of the mountain area: you sneak on someone's porch in the dead of night and leave the excess.
I wonder if you can par-cook your beans in the crock pot (using your own recipe) to a stable point, cool, freeze, defrost and reheat. Or maybe toss the frozen batch in boiling water? That way you wouldn't be dealing with fresh cells; they would have already been cooked. I'll toss a small test batch in the freezer and give you a status update tomorrow. Please note that mine are already 100% cooked, so not exactly what you're going for, but I'll be able to tell you how much the taste and texture is impacted by the freezing step.
I've eaten more green beans since finding this recipe than my entire life up to this point.
Just in case you want to try this, I've linked the recipe. I cook on high for 2 hours, shut if off and then leave it to cool. I've been serving it over Tasty Bite Stir-Fried Brown Rice in the 90-second packages. Those last three condiments are CRITICAL. The dish comes alive with them.
https://finerkitchens.com/swap/forum/index.php?action=display&forumid=1&msgid=256377