I used whipping cream too, and this was just devine. Very easy, but also very impressive. The guest I served this to just raved about it. Thanks.
I made this as directed and it turned out yummy, nice & light & moussy. My only problem was that the lemon liquid didn't seem to fold into the milk whip very well. The mixture kept falling to the bottom of the bowl, it took quite a while to fold it in & even when it looked all mixed more liquid sank to the bottom as it set so there was a small jelly like layer along the bottom of most of it. Even with my problems it still set reasonably well & I got great comments from my guests so it's all good!
CAUTION - this is not an egg-free recipe. Ladyfingers are similar to sponge-cake and typically contain egg. Not for those with allergies.
WOW.....this was great....I did however make two substitutions ....whipping cream instead of evap. milk, and instead of walnuts I sprinkled lemon zest over the top. This got rave reviews at our dinner party. Thanks GingerPeach