Ingredients
12 ounces rhubarb, cut into 3-inch lengths (halved if thick)
8 ounces fresh or frozen sour cherries (about 2 cups), defrosted if frozen, pitted or left on stems if desired
3 strips orange zest (each about 3 inches long and 1/2 inch wide), plus 2 tablespoons fresh juice
1/2 cup sugar
1/2 teaspoon kosher salt
2 teaspoons distilled white vinegar
2 cardamom pods, crushed
Preparation
Preheat oven to 425°F. Toss rhubarb and cherries with orange zest and juice, sugar, salt, vinegar, and cardamom. Spread mixture in a single layer in a 9-by-13-inch baking dish or a 9-by-12 1/2-inch rimmed baking sheet (quarter sheet pan). Roast until softened and juicy, about 20 minutes. Let stand 5 minutes.
Using a spatula, carefully transfer rhubarb and cherries to a shallow dish. Pour juices from baking dish into a small saucepan; boil until reduced and thickened slightly, about 2 minutes. Pour over rhubarb. Serve warm or at room temperature, or refrigerate in an airtight container up to 1 week.
