ButterOnce Corn Butter Knife by CoolShitiBuy ButterOnce is a knife that butters corn on the cob in one application. ButterOnce’s unique design and ergonomic handle slices and spreads butter with ease. Use edge to slice your desired amount from a stick of butter, no excess waste.... 3 1,005 $10.38 via Amazon Facebook Pinterest Save3 Check it out