I Can't Believe It's Not Butter is so buttery and delicious, you'll be tempted to pinch yourself to make sure you're not dreaming! I Can't Believe It's Not Butter is a registered trademark.. I Can't Believe It's Not Butter packs delicious buttery flavour with 81% less saturated fat than dairy butter! Deliciously creamy and smooth! Spread, melt & glaze with it, lick your lips after tasting it! . 81% Less saturated fat than butter. Perfect for spreading and topping. Vegan certified. 39% Vegetable fat spread. 100% plant based. I Can't Believe It's Not Butter!.