Tiramisu is my favorite dessert, but as we all know it's pretty awful from a nutritional standpoint. In an attempt to come up with a healthier alternative, I tried the following:

250 g of creamy LF cottage cheese
fat free, low carb ready-made vanilla pudding (I don't get Jell-O here, so I had to use something else - depending on what you use, you would have to adjust the nutritional data)
14 whole grain ladyfingers
1 TSP sugar
1 cup of cold coffee
rum flavor
10 g gelatin powder

I mixed the CC with the pudding, the sugar, the rum flavor and the gelatin powder and added a little cold water. Then I put half the ladyfingers in a flat, rectangular tupperware container, and soaked them in cold coffee. Then I spooned half the cream on to the layer of ladyfingers, added another layer of cookies, drizzled some more coffee over them, and then added another layer of cream. I put the whole thing in the fridge for about 3 hours - I guess it could stand to stay in there a little longer. Unfortunately, I had no unsweetened cocoa powder, but obviously that would then go on top.

Nutritional profile of the whole thing:
kcal ~507
P ~39g
C ~76g
F ~4g

It was, obviously, nothing like the real thing, but pretty tasty nonetheless. One could substitute low fat mascarpone for half of the cottage cheese, which might improve the taste.