This is going to be my first time molding rice krispie treats for a cake. What is the best way to do it? Is it easier to make my shape while its still warm or cold? Any other tips you guys can give me? thanks.

I just had to use rkt for a cake I did. It's easier to mold when they are slightly warm. Also, butter up your hands so that they don't stick to your hands. Then put in the fridge to firm them up. Worked for me!

Dito to Hollysuann's great advice and I'll add this... if your rkt peice will need a dowel or support to help it stay firmly attatched to your cake you should insert it right from the begining while it is still warm and squeeze the rkt right on the dowel or stick you use. I found that I would rather have sticky hands and a drier rkt peice for BC and MMF to stick to.

Thanks guys. I will be putting a dowel in it I think. I will also be covering it with fondant. Put icing on it first as usual?

If you can get the outside of it smooth no you don't need a layer of BC especially for the underside of a three D peice.. the fondant will need some 'tooth' to hold on to. But otherwise you can add or not add BC. -just super thin-

What is the trick to getting RKT really smooth? I'm doing a teapot out of RKT, and will be covering in MMF. I would prefer not to have a lumpy teapot.

Thanks