Crows go apeshit for plain peanuts and granola bars that I've kinda crushed up or broken into pieces which seem reasonably-sized for them to eat. Usually that means I break a peanut of "average" size into four pieces. Once along that natural split, and then each piece once more. Other birds really like that stuff, too, and whatever the crows don't eat, the smaller ones do. There's always nothing left, perhaps obviously.