In advance: Make clouds.
Spray outside pan
from bottom of
arms and down
sides with nonstick
cereal treat mixture;
mold into cloud shapes on parchment-covered
board. Immediately press cloud shapes
against sprayed area of pan to cover an area
5 in. x 18 in. and 2 1/2 in. thick, tapering to 1/4 in.
wide. Let cool. Roll out white fondant 1/8 in.
thick; cut a 22 in. x 6 1/2 in. strip; cover clouds,
shaping over raised areas with fingers and
trimming as needed. Let set. Slide pan away
and remove cloud.