Others in captivity, for instance: Chimps Are No Chumps: Give Them An Oven, They'll Learn To Cook

Many (crows, racoons, probably more) will use water to soften food, which is kinda similar. Control of fire I think is too difficult for proper cooking.

Some australian raptors will deliberately spread wildfires to hunt. So they probably cook some food, but it's not intentionally for that reason.