another option for casein protein (its slow released which is perfect before bed for when your sleeping) is riccotta cheese but add some splenda to sweeten it up. to me it honestly tastes like cheese cake. you can add a squeeze of fresh lemon juice as well to make it lemon cheese cake. i often add some shaved almonds to the mix as well. trust me its amazing.
Wake up and chew a peice of sugarless gum. Whenever I sleepwalk i just do that rather then eating anything in site on impulse and regretting it in the a.m