You should NEVER EAT THE LEAVES – they are toxic, and you should cut off that fat whitish root end of the stalk, then cut into 1" pieces (any longer and you will have a problem with the stringyness of the stalk).
We use two recipes for rhubarb/strawberry tart. One is made with a custard base and the other is just fruit, sugar, and cinnamon or nutmeg – both in a cookie-like tart crust.
BTW: Rhubarb is a great item to grow in your garden. A couple of well established plants will fill the average family needs, it is totally carefree, and takes up little room.
Question: Why don’t we eat rhubarb after about July 4th? Or, maybe all the rest of you out there do eat it all summer and it’s just us here in the Hudson Valley who ignore it after a binge with it in the spring?