Sort of cheating - it has no crunchy base. But it's still really good.
You take 1 tub of fat free cottage cheese, juice and zest of 4 lemons, 3 eggs and your choice of sweetener (eg. Splenda or Stevia). Blend that all together, put in small ramakins and then bake in a bain marie for 45 mins on about 180 deg C. Maybe I'll make a proper post on it one day soon!
You joining in the challenge @foovler?
When I have the time I would. Will try to...