I started with putting mine in a separate container and she fed very well each time, but then I opted to start just feeding straight to her normal enclosure.
I think it was a good idea because within minutes of bringing a bag of baby rats home, she is out of her den trying to escape the cage to get at them, every time.
Basically she gets pretty worked up when food comes around and although I could easily get her out of her tank, but she clumsily snaps at everything within reach when she smells food. Not aggressive-like, just kind of dorky - still learning clumsy and excited.