Ingredients

• 4 large firm but ripe plums (preferably Santa Rosa plums), halved, pitted, cut into ⅓-inch- thick wedges
• 1½ cups fresh blackberries
• 6 tablespoons sugar
• ½ vanilla bean, split lengthwise

Preparation

1. Combine fruits and sugar in medium bowl. Scrape in seeds from vanilla bean; add bean. Toss to coat. Let stand at room temperature until juices form, tossing occasionally, about 1 hour.
2. DO AHEAD Can be made 3 hours ahead. Cover and chill.

Source: http://www.bonappetit.com/recipe/vanilla-scented-plums-and-blackberries