For just 30 cal, this is the best recipe I have ever come accross.
There are only two ingredients: Sugar free Jello ( I substitute the
Walmart brand which has only 20 cal. for the entire pack) Make
according to dir. After set, place the entire portion in a blender and
add 1/2 a 6-oz. non-fat yogurt cup (80 cal for the whole thing, but
since you only use half, it's 40 cal) Blend just a few seconds. Pour
into two larger bowls and place those in the FREEZER for 30 min. If you
leave them in too long, (I think they might freeze solid, but 30 min.
is perfect). Remove, stir the little layer of ice that has formed into
the mixture and eat. Each bowlful is only 30 cal. My daughter calls
this Yojo for yogurt + jello. I match the flavor of yogurt with the
corresponding flavor of gelatine. You could also add fresh fruit right
at the end. dkw