i've got no pattern for this one unfortunately as i stitched this from a sprite, however i will share some of the tidbits that i remember
i used this picture:
and i used (dmc) 666 for red, 740 for orange, 444 for yellow, 701 for green, 995 for blue, and 820 for purple. 605 for the frosting, with 601 for the sprinkles
i can't remember what color i used for the pop tart tan color, but it was a sort of sand color rather than yellow and i used 535 for nyan cat's gray color, although i might have picked a shade or 2 lighter in retrospect
stitching from a sprite like this is a little hard to get used to, but once you get used to measuring how many pixels across to stitch, it gets a lot easier, lol^^;
i hope this helps a little!