The landlord tells police in Logan Township that he stopped by his tenants' home to let out the dogs about 8 p.M. Sunday.
That's when the landlord saw a small stovetop fire and called firefighters.
Police say it appears the dogs were trying to get into the cupcakes and not only knocked off the stove's control knobs, they also turned on the stove, causing the fire.
The fire has been ruled accidental. Nobody was hurt. Logan Township is east of Pittsburgh.