- Preheat oven to 450°F.
- Arrange grape clusters in a single layer on a baking sheet. Drizzle with oil and sprinkle with salt and pepper.
- Roast until the skins are slightly crisp but the grapes are still soft and juicy inside, about 15 minutes.
- Serve warm or at room temperature, with yogurt for dipping.
- Adjust seasoning according to taste. Serve fresh immediately.