From Wikipedia: During the height of their popularity (1988-1991) the Teenage Mutant Ninja Turtles (TMNT) had a vast number of food tie-ins ranging from inevitable to obscure, many of which have become very rare, with some fans looking for the food packages to many of these items.
Chef Boyardee TMNT Pasta: Pasta pieces in the shape of the turtles (in different poses to represent each individual turtle), canned in tomato sauce with mini meatballs; a Shredder piece was later added to the pasta and the character added to the package art. There were several versions of this product including a microwaveable meal. Chef Boyardee also made "Ninja Turtles Cheese Pasta Dinner", the same pasta shapes were used. This photo is from tOkKa's Flickr.
TMNT Cracks: Crackers shaped like the various ninja turtle characters. I couldn't find a picture of these crackers but I did find an ad for a TMNT Easy Cheese mold (left). Man... just when you thought Easy Cheese couldn't get any more disgusting/awesome.
McCain TMNT Frozen Pizza: Of course they would make a TMNT fozen pizzza. Frozen pizza featuring the Ninja Turtles on the box. Also released was Pizza Mini Slices which had the odd topping of apple with a green colored crust. I can totally remember eating one of these, not the apple one that sounds extra gross.
Other Turtlelicious snacks include TMNT "Vanilla Power" pudding pies; TMNT Royal brand geletan ooze dessert; TMNT frozen water ice confection (popsicle) with buble gum eyes and autographed stick; TMNT cereal; TMNT cookies; TMNT fruit snacks; headaches for parents; fodder for e-Bay.
Graphic from xkcd.