how long do I cook lasagne for?

[cupcakes]

I've thrown over the packet of lasagne sheets and can't remember what it said.
Possibly 50 mins at 180 or 200 degrees?
Anyone got a packet they can check for me??

[cupcakes]

over? out

[Chandra]

Until you stick a knife on it and you can easily cut the lasagna sheets....

[beckybrastraps]

40 min, 180deg is what I do. Doesn't say on my packet!

[beckybrastraps]

I have a fan oven - I think that might make a difference?

[cupcakes]

thank you