I looked at the box and it is just regular unsweetened. I found another recipe which I think will help. The original was:
1 1/2 stick butter
1 cup Splenda
3 oz Unsweetened chocolate
3 eggs
1.5 Tsp vanilla Extract

The revised version:
1 stick butter
2 oz chocolate
1 tsp vanilla
2 eggs
1 c Splenda

And it was wonderful. I made the revision for BUNCO with real sugar for the non-LCers and they tasted the LC and said not much difference.

Thanks for your reply.