Everything was replaced with blueberries, so there'd be no organisms to break things down. The sun would mostly dry things out probably, but eventually would start to change things.
It is a boiling mass of organic compounds so maybe life would spontaneously form again. But the planet is mostly sugar so as soon as something evolved to metabolize that, it'd completely take over then starve to death. Possibly at a pre cellular stage - just a chemical reaction that turns sugar into whatever catalyst causes this reaction.