- 4 large firm but ripe plums (preferably Santa Rosa plums), halved, pitted, cut into 1/3-inch-thick wedges
- 1 1/2 cups fresh blackberries
- 6 tablespoons sugar
- 1/2 vanilla bean, split lengthwise
- 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. DO AHEAD: Can be made 3 hours ahead. Cover and chill.