This is the easiest Rhubarb Crisp recipe that I have ever found and it tastes GREAT!
Layer in 9x13 pan:
8 c cut rhubarb
1 1/4 c sugar
1/2 bag mini marshmallows
1 box white cake mix, dry
1/2 c melted butter
Bake at 350 degrees for about an hour!
Can't get much easier than that can you?