If your Crockpot green bean casserole turns out watery or soupy, you can leave the cover off for a time while the heat is turned to low. Stir often and allow some of the liquid to steam off. This usually helps. In the recipe above, that's what I instruct. I had to let it "steam off" a bit at the end to help some of the liquid evaporate. If you find that this doesn't help for whatever reason, you can always drain some of the liquid off with a scoop or ladle.