If a big hungry moose comes to visit, you might give him a muffin to make him feel at home. If you give him a muffin, he'll want some jam to go with it. When he's eaten all your muffins, he'll want to go to the store to get some more muffin mix. <P> In this hilarious sequel to <I> If You Give a Mouse a Cookie,</I> the young host is again run ragged by a surprise guest. Young readers will delight in the comic complications that follow when a little boy entertains a gregarious moose.</P>