Ben 10 - Steamed Tofu and Wheat Germ with Algae

Steamed Tofu and Wheat Germ with Algae is a food that Sandra cooked in O Mother, Where Art Thou?.

Spongebob - Nature Patties

Nature Patties are a food created by SpongeBob in the episode, "Food Con Castaways."

The Nature Patties resemble Krabby Patties except they are made of various things found in the forest such as leaves, twigs, dirt, stones, and even worms.

SpongeBob serves the Nature Patties to Mr. Krabs, Squidward, and Patrick for them to eat instead of the last Krabby Patty they have. Patrick appears to enjoy the Nature Patties but Mr. Krabs and Squidward show great disgust for them. Later in the episode, a Nature Patty is unintentionally given to the Mayor as Mr. Krabs, Squidward, and Patrick somehow switch that with the real Krabby Patty. Fortunately, the Mayor enjoys the Nature Patty and gives the award to them.

Adventure Time - Soy People

Soy people is a food that Rainicorns eat instead of real human flesh, introduced in the episode "Her Parents."

Ethel explains that because all humans are thought to be extinct, they have never tasted real human flesh, but soy people is supposed to taste exactly the same and is apparently delicious. It looks like a ball of dumpling dipped in soy sauce that has a smiley face. Finn reluctantly ate some of it and apparently liked it.

It may be a reference to the film Soylent Green or more likely just to hufu, artificial human-flavored tofu made from soy products.