Incredible Edibles

Incredible Edibles was a toy sold by Mattel in the 1960s. It was a series of circular metal molds into which Gobble-Degoop, a candy-like gel, was squeezed. The form was then placed in a small oven and baked into a rubbery soft candy in the shape of worms, insects, and flowers among others, coming in six flavors: licorice, mint, butterscotch, cherry, root beer and cinnamon.

A later set (Kooky Kakes) was made to bake small cakes and decorate them with arms, legs, and faces. Gobble-Degoop and cake mixes could be purchased on blister cards as well as a few additional mold sets. The "Incredible Edibles" formula was created by chemist Don Lusk.

...
Wikipedia