Funky breakfast cereal put out by General Mills. A less-crispy riff on the popular Raisin Bran theme, with two differences from the norm: Slivers of almond, which I usually pick out, and Raisin Nuts in the place of normal raisins.
Raisin Nuts, a kind of hefty über-raisin with a beefy grain-like shell, can be found nowhere in the universe besides this cereal. They taste really good. The box claims that Raisin Nuts are made by coating normal raisins with nuts, hence the name.
Eating a box of Raisin Nut Bran basically comes down to alternating between bowls in which there are not enough Raisin Nuts and bowls in which there are too many.