Fruit butter is made by cooking down the fruit mixture until thick and sticky instead of adding pectin to set the mixture as you do with jam. Spread on whole-grain toast or stir into plain yogurt. We prefer to peel stone fruit, such as apricots, nectarines, peaches, and apples and pear for this recipe. If you're making a butter with “seedy” berries, such as blackberries, raspberries or even blueberries, you can puree the butter and pass it through a sieve for the smoothest result. Try the combination of blueberries with lime juice and zest or plums with orange juice and zest.