Well...according to the breakdown at http://www.recipezaar.com/145041, the recipe was enough for 15 servings with each serving having 302 calories.

And the way we made it, each one of our ramekins was a little under twice that so I'll be optimistic and say that was 500 calories each. But then we each ate 2 so um...yeah I'm glad I'm not on a diet. :)