Rosemary-and-Balsamic-Roasted Grapes and Olives
For this rustic antipasto dish, you’ll need two shallow baking dishes. One should be large enough (about 2-quart capacity) to use as a serving dish. Choose olives that haven’t been marinated or oil-cured.
1. Preheat oven to 350°F. Grease 2 shallow baking dishes with oil.
2. Warm 2½ tsp. oil with 1 tsp. rosemary in skillet over medium-low heat 2 to 3 minutes, stirring occasionally. Remove from heat; stir in walnuts and salt. Spread nuts in 1 prepared baking dish.
3. Whisk together vinegar and agave nectar in bowl. Stir in grapes, olives, and remaining 1½ tsp. rosemary. Spread mixture in remaining baking dish.
4. Roast walnuts 9 to 12 minutes in oven, or until golden-brown. Remove, sprinkle with more kosher salt, if desired, and cool. Increase oven heat to 400°F. Roast olives and grapes 20 to 25 minutes, or until sauce is syrupy, stirring occasionally. Cool 10 minutes, stirring occasionally. Sprinkle walnut pieces over grapes and olives, and serve warm.